SIM800L GPRS GSM Module Core Board Quad-band TTL Serial Port with the antenna Soldered:With Soldered Pin Input voltage: 0

Input voltage: 0

The DHT22 is a basic

Here's a handy arduino shield: we've had a lot of people looking for a dedicated and well-designed data logging shield

Drive current 2A (maximum single bridge)

Output: DC5V/2A max

SIM800L GPRS GSM Module Core Board Quad-band TTL Serial Port with the antenna Soldered:With Soldered Pin Input voltage: 0Chip: SIM800L Voltage: 3. 7 4. 2 V Support networks: Global four band network Module size: 2. 5 cm x 2. 3 cm TTL serial port for serial port, you can connect directly to the microcontroller. No need for MAX232 Automatic start of the power module, connection network Signal lights on board all the way. Blinks slowly when there is a signal, flashes quickly when there is no signal. This is Small SIM800L GPRS GSM Module Micro SIM Card Core Board Quad band