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Operating temperature -30 to 80 Operating Voltage 3.3V-4.2V Power Voltage 3.4V Standby average current 3ma the following Stand by GSM / GPRS Four bands, including 850,900,1800,1900MHZ GPRS Class 10 Sensitivity -105 Support voice calls Stand by SMS SMS Stand by GPRS Data services, the maximum data rate, downloads 85.6Kbps, Upload 42.8Kbps Supports standard GSM07.07,07.05 AT Command and Ai Thinker Extended Command Stand by 2 A serial port, a serial port to download, a AT Command port AT Command supports standard AT and TCP / IP Command interface It supports digital audio and analog audio support HR , FR , EFR , AMR Speech coding Stand by ROHS , FCC , CE , CTA Certification SMT 42PIN Packaging -
Highlights: By adjusting the potentiometer can set the length of time. MicroUSB 5.0V power supply with an input port, easy to use. 5 ~ 30V wide supply voltage. External signaltrigger and keytriggerin two ways. With a relay indicator. Anti-interference ability, the relay at various interference will not misoperation, suitable for industrial control. -
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC. -
This is a small but very effective Linear current sensor module, This module is designed around ACS712 hall effect based current sensor chip. This module is good for max 5A current measurement. ACS712 chip takes AC or DC voltage at its input and its output varies linearly with sensed current, its output is analog voltage. -
The Soil Moisture Sensor is a simple breakout for measuring the moisture in soil and similar materials. The soil moisture sensor is pretty straight forward to use. The two large exposed pads function as probes for the sensor, together acting as a variable resistor. The more water that is in the soil means the better the conductivity between the pads will be and will result in a lower resistance, and a higher SIG out. -
The Mega 2560 is a microcontroller board based on the ATmega 2560. It has 54 digital input/output pins (of which 15 can be used as PWM outputs), 16 analog inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable or power it with a AC-to-DC adapter or battery to get started. The Mega 2560 board is compatible with most shields designed for the Uno and the former boards.

