GSM/GPRS/GNSS/Bluetooth HAT for Raspberry Pi, Based on SIM868OverviewThis is a handy, low power Raspberry Pi HAT which features multi communication functionalities: GSM, GPRS, GNSS and Bluetooth.It allows your Pi to easily make a telephone call, send messages, connect to wireless Internet, global position, transfer data via Bluetooth, and so on. Features:General Raspberry Pi connectivity, compatible with Raspberry Pi 2B/3B/Zero/Zero W.Supports SMS, phone call, GPRS, DTMF, HTTP, FTP, MMS, email, etc.Support GPS, COMPASS, Glonass, LBS base station positioning, omni-positioningBluetooth 3.0, supports data transferring through Bluetooth.Onboard USB TO UART converter CP2102 for UART debugging.6x LEDs for indicating the module working status.SIM card slot for 1.8V/3V SIM cardRTC with backup battery holder.Baudrate auto detection (1200bps ~115200bps)Control via AT commands (3GPP TS 27.007, 27.005,[…]
Tag: zero
Specification:Container Quality: 1PCSColor: GreenItem Size: 170 x 130 x 30mmDisplay Mode: LCDLCD Size: 40 x 17mmScale Division: 1gMeasuring Range: 2-5000gUnit: g/ lb/oz to changePower: DC 3V 2 x AAA batteries (not included)Working Temperature: 0-40 degree Function:1.Auto Clear2.Auto-Off3.Overload Tip4.Low voltage tip5.Unit conversion: convert “g – oz – lb” with the “UNIT” button. (1000g=35oz=2.2lb)6.Peeling: Place the container on the scale, shortly press the “Power / T” until the weight displays zerothen put in the item and you can get the net weight of the item. General Form Color Grass Green Material Plastic Quantity 1 set Dimensions & Weight Dimensions 6.69 in x 5.12 in x 5.12 in (17 cm x 13 cm x 13 cm) Weight 8.64 oz (245 g) Packing List 1 x[…]
Features:The high resolution has the support of 192KHz/24bits with the sound source of above CD quality.For HIFI amplifier, 16-300ohms headphone can be supported.With power on/off, the volume adjustment can be controlled with a button, and the top can be adjusted to the optimal volume.Through the memory function, after the shutdown of the previous shutdown power, even the storage capacity, there is no need to increase the volume from zero to the next playback time.Digital television, high-definition digital audio equipment, CD players, DVD players, blu-ray players, game consoles, will be used in the device without RCA(L/R) terminals, such as a computer.Optical(optical) digital input signal format/coaxial(coaxial) only corresponds to PCM/LPCM.Product descriptions:This product is in the normal D/A converter, the optical fiber/coaxial output[…]
Description:Electronic Digital Caliper offers instant and accurate readings of inside, outside, step, and depth measurements with accuracy of 0.001 “. SAE / Metric conversion switch automatically converts measurements to inches or millimeters with the simple press of a button. Adjustable thumbscrew provides tension for optimal movement of the slide and locks the jaws of the caliper in place. Features:SAE / Metric conversion switchZero calibration switchAutomatic On / OffEasy-to-read LCD displayDurable stainless steel construction Specifications:Range: .01mm to 150mm / .001 “to 6”Accuracy: 0.02mm / 0.001 “Resolution: 0.01mm / 0.0005 “ General Model N/A Quantity 1 piece Form Color Silver Material Stainless Steel Specification Screen Size 1.75 inches Battery Number 1 Dimensions & Weight Dimensions 9.25 in x 3.07 in x 0.51 in (23.5 cm x[…]
Features:The high resolution has the support of 192KHz/24bits with the sound source of above CD quality.For HIFI amplifier, 16-300ohms headphone can be supported.With power on/off, the volume adjustment can be controlled with a button, and the top can be adjusted to the optimal volume.Through the memory function, after the shutdown of the previous shutdown power, even the storage capacity, there is no need to increase the volume from zero to the next playback time.Digital television, high-definition digital audio equipment, CD players, DVD players, blu-ray players, game consoles, will be used in the device without RCA(L/R) terminals, such as a computer.Optical(optical) digital input signal format/coaxial(coaxial) only corresponds to PCM/LPCM.Product descriptions:This product is in the normal D/A converter, the optical fiber/coaxial output[…]
About transistor Multifunction Tester:The tester uses 3.7V rechargeable lithium battery (battery model: 14500) powered portable design, but you can use the T-MICROUSB outlet to charge the battery and power the system for a long time in the indoor use of more economical and convenient, eliminating the need always to be replaced battery of economic input! Features:one key measurement operation, auto power off delay. Shutdown current is only 20nA, support for battery operation.Automatic detection PNP and NPN bipolar transistor, N, P-channel MOSFET, JFET FET, diodes, two diodes, thyristors, resistors, capacitors, inductors. Automatic detection pin definitions.measuring the current amplification factor (B) of the bipolar transistor and the turn-on voltage of the emitter junction (Uf). Darlington transistor amplification factor can be identified by the[…]
Features FunctionsMeasuring range 0-360 DegreeHigh resolution 0.05 DegreeThree function keyZero-setting at any positionQuick display of the measured value on big LCD screenWith on-off power button , automatic power off3V environmental Lithium battery, battery life >1 yearStrong blade lock can hold the readout securely Reversible reading allowing to flip the display reading to right side up General Model N/A Quantity 1 piece Form Color 200mm Material Stainless Steel Dimensions & Weight Dimensions 9.84 in x 1.97 in x 0.79 in (25 cm x 5 cm x 2 cm) Weight 10.58 oz (300 g) Packing List 1 x Inclinometer (without battery) All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed. To enable volume discounts on this site, use coupon code: BULKRATE during checkout. You will see a discount applied at the bottom of the shopping cart. Competitive pricing is available. Contact us for details. Quantity 3+ units 5+ units[…]
Feature:1). Plastic material2). Measuring range 0-90°*43). Three function key4). With data hold function5). Zero-setting at any position6). Quick display of the measured value on big LCD screen 7). With on-off power switch & Auto power-off for option8). 9V heavy duty battery, battery life >1 year9). Reversible reading allowing to read display to right side up 10). Relative-absolute measurement interchange at any position, ABS function11). Used for angle measurement in automotive, woodwork, building, drilling machinery etc Specification:Measuring range: 360°Resolution: 0.05°Accuracy: ±0.2°Repeatability: 0.1°Battery: 9V batteryWorking temperature: 0°C-45°CDimension: 57*57*30.5mAbsolute zero measurement based on the horizontal surface General Model N/A Quantity 1 piece Form Color Black Material Plastic Dimensions & Weight Dimensions 2.24 in x 2.24 in x 1.18 in (5.7 cm x 5.7 cm x 3 cm) Weight 17.64 oz (500 g) Packing List 1 x Digital inclinometer All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed. To enable volume discounts on this site, use coupon code: BULKRATE during checkout. You will see a discount applied at the bottom of[…]
Feature:Large LCD displayAuto zero functionPrecise, compact and easy to carry and operateSingle switch function 32 positions and reachIntegrating voltmeter, ammeter, ohmmeter capacitance meter, temperature gauge testAn ideal tool for use in areas such as laboratory, workshop and home applications etc Maximum voltage between terminals and earth: 1000DC or 700VACproteciton Fuse: F 200mA / 250VPower: 9 V battery 6F22 ( No including the battery )Display: LCD, 1999 counts, updates 2-3 / sec.Measuring method: dual-slope integrating A / D converterOperating temperature: 0 ~ 40º cStorage temperature: -10 ~ 50º c Specifications:DC voltage: 200m-2-20-200-1000V ± 0.5%AC voltage: 20-200-750V ± 1%DC current: 20u-20m-200m-20A ± 1.8%AC current: 200m-20A ± 2%Resistance: 200-2k-20k-200k-2M-20M-200M ω ± 1%Capacitance: 2n-20n-200n-2u-20uF ± 4%Frequency: 2k-200kHz ± 3%Temperature:-2% ± 20 º C~1000º C General Model[…]
Features:100% Brand new and high qualityBNC connector, suitable for most pH meter and controller with BNC connector.Suitable for wide range of application: Aquariums, Hydroponics, Laboratory etc.Measurement range: 0.00~14.00 PHZero-point: 7 +- 0.5PHAlkali Error: 0.2PHTheoretical Percentage Slope: ≥98.5%Internal Resistance: ≤250MΩResponse Time: ≤1minOperating Temperature: 0-60ºCTerminal Blocks: BNC plugCable length: Approx. 70cm General Model – Quantity 1 piece Form Color Blue Material Plastic Dimensions & Weight Dimensions 7.48 in x 2.76 in x 1.97 in (19 cm x 7 cm x 5 cm) Weight 3.28 oz (93 g) Packing List 1 x pH Electrode Probe1 x Calibration Solution All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may[…]
FeatureFowler inch/metric dial test indicator with yellow face is designed to measure surface variations in narrow or recessed areas0-0.8mm measuring range, 0.0005″/0.01mm graduations, 0-40-0 balanced inch readings, and 0.001mm balanced metric readingsAuto-reversing contact point and adjustable bezelThree dovetail mounts for mounting indicator from the top,back,or frontOne-piece housing with satin chrome finish provides durability This dial test indicator is designed for taking measurements in machining,layout,and inspection work.The dial has microfine black graduations for 0-40-0 balanced inch readings and red graduations for 0.001mm balanced metric readings.A movement and an auto-reversing contact point provide smooth action.A knurled bezel rotates 360 degrees to zero the reading at any location.Three dovetail mounts on the top,back,and front of the indicator provide a range of mounting options.The[…]
Description:• This test can be a USB charging current, voltage, discharge capacity,Quantity of electric charge,power, timing, intelligent devices.• It can be very easy to find digital device charging problem.• Tester three dimensional size 65 * 24 * 14mm • The only button on the tester is used to view and test data switch, The tester can be powered down to save data. Specifications:1. Input Voltage: 3V-30V 2.Input current : 0 – 5.1A3.Cumulative capacity range: 0-99999 mah precision: 0.001 Ah4.Charge accumulation scope: 0-999999 MWH precision: 0.001 Wh5.Cumulative power range: 0-299.999W precision: 0.001W6.Timing the maximum range: 0-999 hours 59 minute 59 seconds precision: 1 second7.Parameters that you can test: Voltage of battery. Current of battery, discharge capacity of battery,Quantity of electric charge,power of battery,timing.8.Communication function: Yes9. Parameters adjusting function :Yes. Equipment for parameters adjustment: One electronic load,one constant current source. Voltage of constant current source should be set to 8.5V There are 3A, 2A, 1A and 0.3A models for current adjusting.Here is a example for 3A:When you set electronic load at 3A model, the current will be adjusted step by step.It will cost you about 10 seconds and you can see the result changing procedure in the LCD screen.When you see the 3A result shown in LCD screen, the adjustment process is finished. You can shutoff the electronic load and the parameters will be saved automatically.10. Clean the data : Push the button until the parameters changed to next sets of parameters. Then release the button.Then the next sets of parameters will be started and they will start from zero.11. Over voltage or under voltage : Over voltage or under voltage, LCD screen displays a warning symbol and issue rapid beep beep sound.12. Turn on mode l: The LCD screen will show all parameters within 1s when you connect power supply by Micro USB or male plug of USB with wire.(It is to check whether the LCD screen is good or not).Then you can see the parameters used last time(capacitor and which set of parameters). You also can see the current voltage, current and over voltage or under voltage. Please see following illustration.USB output port can be connected to a data line, a discharge resistor or the like cable devic comprising a data communication function, the data does not affect the data transmission line.Test specifications, voltage can not exceed 30V, current can not exceed 5.1A.Note:When the voltage is lower than 3V on the instrument display No display screen or higher than 22V,LCD screen displays a warning symbol and issue rapid beep beep sound, it does not affect the use. Application examplesBecause mobile phones and digital devices at low battery or full charge, the current and voltage is not a stable value,the application example of the dischargedevice is a USB 1A or 2A discharge resistor. Note: This data is mobile power discharge capacity, the battery capacity is not, according to our experience, the discharge capacity is about 1.9 times the battery capacity. The former Test Reference Manual Tester discharge capacity value is cleared,and the mobile power is fully charged. General Model – Quantity 1 piece Form Color Black Material Plastic Dimensions & Weight Dimensions 2.56 in x 0.94 in x 0.55 in (6.5 cm x 2.4 cm x 1.4 cm) Weight 0.92 oz (26 g) Packing List 1 x Tester All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to package variations from suppliers, the product packaging customers receive may be different from the images displayed. To enable volume discounts on this site, use coupon code: BULKRATE[…]
Features:1. Also shows voltage and current and mAH data for easy viewing.2. Mobile power output MAH can be detected.3. Does not affect the data transmission.4. With precision current calibration function, the current accuracy is higher(it has been calibrated when shipped)5. Smaller loss Specifications:Input Voltage: 3V – 7VThe voltage resolution: 0.01 VInput current: 0.05A-3.50AThe current resolution: 0.01 ACapacity range: 0-19999 mAHAccuracy: plus or minus 1%Current of battery, value of discharging capacitor.(Total ten parameters)Clean the data: Push the button until the parameters changed to next sets of parameters. Then release the button. Then the next sets of parameters will be started and they will start from zero.Check the parameters: Quick beat the button double times(within 0.5s), then it is checking model. The[…]
Features:Two way measurement, internal and external Linear capacitive measuring system Zero setting in any position With easy to read large LCD display Minimum scale to read is 0.1mm / 0.01 inch An ideal tool for a broad range of industrial and automotive applications General Model N/A Quantity 1 piece Form Color Silver Material Plastic Specification Powered By CR2032 3V Battery Battery Number 1 Battery included or not No Dimensions & Weight Dimensions 8.27 in x 2.36 in x 1.18 in (21 cm x 6 cm x 3 cm) Weight 3.32 oz (94 g) Packing List 1 x Digital Caliper All packages from DX.com are sent without DX logo or any information indicating DX.com. Due to[…]
Description:Delcast Electronic Digital Caliper offers instant and accurate readings of inside, outside, step, and depth measurements with accuracy of 0.001 “. SAE / Metric conversion switch automatically converts measurements to inches or millimeters with the simple press of a button. Adjustable thumbscrew provides tension for optimal movement of the slide and locks the jaws of the caliper in place. Features:SAE / Metric conversion switchZero calibration switchAutomatic On / OffEasy-to-read LCD displayDurable stainless steel construction Specifications:Range: 0.01mm to 150mm / 0.001″ to 6″Accuracy: 0.02mm / 0.001″Resolution: 0.01mm / 0.0005″ General Model N/A Quantity 1 piece Form Color Silver Material Stainless Steel Specification Battery included or not No Dimensions & Weight Dimensions 9.65 in x 2.95 in x 0.59 in (24.5 cm x 7.5 cm[…]
Features:1. High precision strain gauge sensor2. Auto zero-auto off3. Low battery/overload indication4. Multi-unit ( Lb/oz/g ) display, press “Unit” button to switch among kg, oz, lb and g.5. Tare function6. 5Kg Weight Scale with high precision strain gauge sensor7. All durable plastic construction is easy to clean and portable to store8. Easy to read LCD display, L1.6 x W0.7″ LCD screen9. Light weight, mini size, easy to carry Description:Color: WhiteLCD displayCapacity: About 200oz (12.5lb)/ 5000g (5kg).Accuracy: 0.1oz / 1gUnit Switch: kg, oz, lb and g.Power Supply: 2 x 1.5V AAA battery( Not included)Calibration is not required before first use. Only calibrate if the scale is not weighting properly. General Model WH-B05 Quantity 1 piece Form Color White Material Plastic Specification Type Kitchen[…]
Highlights:360° Complete Coverage Smart Home System: YI Dome Camera is your 360° complete coverage smart home system. With YI you are in touch with your home wherever you are.Rotation: Bidirectional rotation supports a 345° horizontal rotation range, and 115° vertical rotation range. With a 112° wide-angle lens, YI Dome Cam captures the full scene with practically zero blindspots. Automatically returns to “Auto-masking” mode for extra sense of security ensuring no recording without your permission.Store up to 8 positions as bookmarks and easily return to them at a touch of a button. Choose to auto-cruise horizontally 360° or make pit stops at your selected bookmarks. Protection: YI Dome Camera keeps you connected with your family always. Check-in with your family through 2-way audio[…]
Extremely Durable and Made Of High Constructed Aluminum.This side, quick release nine slot rail mount will fit AK-47, Saiga, Saiga-12 firearms with side railsEasy On/Off LeverQuick Detachable Lever So The Mount Can be locked to or detached from the gun solidly/quickly by hand without any tool while retaining zeroPicatinny Rails for Scope & Versatile Accessory Applications General Form Color Black Material Aluminum Alloy Quantity 1 piece Specification Gun Type fit AK-47, Saiga, Saiga-12 firearms with side rails Rail Size 20mm Mount Type N/A Ring Diameter NUM Dimensions & Weight Dimensions 5.28 in x 3.74 in x 1.38 in (13.4 cm x 9.5 cm x 3.5 cm) Weight 6.35 oz (180 g) Packing List 1 x Release rail All packages from DX.com[…]
Features:– Ultra-wide field and blue tape big eyepiece– Waterproof, anti-shake and antiskid– Ideal for travel, field work, forestry, electricity, telecommunications, fire protection, border control, transportation and other construction units Parameter:– Magnification: 10x– View angle: 7.8 degrees– Eye width ( IPD ): 52 – 74mm– Field of view: 114m / 1000m– Eye relief: 13mm– Exit pupil diameter: 2.5mm– Resolution-on axis ( soa ): less than 8 inches– Ocular lens diameter: 13mm– Objective lens diameter: 25mm– Close focus distance: 2.5m– Coating type: fully multi-coat– Size class: compact– Focus system: center focus– Eyecups: fold-down– Can not adapt to tripod How to Use:1. Set the right eyepiece to zero and sight on a distant subject2. Cover the right front lens with your hand and[…]
264×176, 2.7inch E-Ink display HAT for Raspberry Pi, three-color, SPI interfaceOverviewThis is an E-Ink display HAT for Raspberry Pi, 2.7inch, 264×176 resolution, with embedded controller, communicating via SPI interface, supportsred, black, and white three-color display.Due to the advantages like ultra low power consumption, wide viewing angle, great effect under sunlight, it is an ideal choice for applications such as shelf label, industrial instrument, and so on.FeaturesNo backlight, keeps displaying last content for a long time even when power downUltra low power consumption, basically power is only required for refreshingCompatible with Raspberry Pi 2B/3B/Zero/Zero WOnboard 4x KeysSPI interface, for connecting with other controller boards like Raspberry/Arduino/Nucleo, etc.Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32) SpecificationsOperating voltage: 3.3VInterface: 3-wire SPI,[…]