SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-band TTL Serial Port

SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-band TTL Serial Port Description: Chip: SIM800L Voltage: 3.7-4.2V Support networks: China Mobile, China Unicom and global quad-band network Module size: 2.5cmx2.3cm TTL serial port for serial port, you can link directly to the microcontroller. No need MAX232 Power module automatically boot, homing network Onboard signal lights Read more about SIM800L GPRS GSM Module MicroSIM Card Core Board Quad-band TTL Serial Port[…]

SIM900A Smart Electronics GPRS A6 module Wireless Extension Module GSM GPRS Board Antenna Supper SIM900A

SIM900A Smart Electronics GPRS A6 module Wireless Extension Module GSM GPRS Board Antenna Supper SIM900A GSM A6 modules: size 22.8 * 16.8 * 16.8 mm; working temperature 30 °c to + 80 °c; Working temperature: -30 °c to + 80 °c Chip Working voltage: 3.3 V to 4.2 V. The controlller includes MP1584 Step down module, Read more about SIM900A Smart Electronics GPRS A6 module Wireless Extension Module GSM GPRS Board Antenna Supper SIM900A[…]