SIM800L module can support 4-band GSM/GPRS, and the working frequency bands are GSM850, EGSM900, DCS1800 and PCS1900MHz.<br> The size of the module is only 17.815.82.4 mm, which can almost meet the requirements of space size in all user applications.<br> The physical interface between the module and the user is 88Pin LGA pad, which provides all the hardware interfaces of the module.<br> Up to 50 keys can be supported. All the way full function serial port.<br> One USB interface can simulate one serial port, which is convenient for users to debug and download software<br> Two audio interfaces, including microphone input and receiver output.<br> Programmable general purpose input/output interface (GPIO).<br> All-way SIM card interface<br> Support FM function<br> Pwm function pin<br> SIM800L is designed with power-saving technology, which consumes as little as 1.11 mA in sleep mode.<br> Module configuration:<br> GSM 85090018001900MHz<br> BT: Not supported<br> FLASH 24Mbit<br> RAM 32Mbit<br> Main features of module:<br> Characteristics: Description<br> Power supply: voltage range: 3.4V ~4.4V<br> Power saving: the current consumption in SLEEP mode is 1.11mA(AT+CFUN=0)<br> Band: Four bands: GSM850, EGSM900, DCS1800, PCS1900, which can automatically search for four bands.<br> You can also set the frequency band through the AT command.<br> Comply with GSM Phase 2/2+<br> GSM type: small mobile station<br> Transmit power class 4 (2w): gsm850, EGSM900<br> Class 1 (1W)DCS1800PCS1900<br> GPRS connection feature GPRS time slot defaults to level 12<br> Gprs time slots class8, 10 and 12 are optional<br> Gprs mobile station class b<br> Temperature range Working temperature:-40 ~+85 Storage temperature: -45 ~ +90<br> GPRS data characteristics GPRS data downlink transmission: maximum 85.6kbps.<br> Uplink transmission of GPRS data: maximum 85.6kbps.<br> Coding formats: CS-1, CS-2, CS-3 and CS-4<br> PAP (password authentication protocol), which is usually used for PPP connection, is supported<br> Embedded TCP/IP protocol<br> Support packet broadcast control channel (PBCCH)<br> Transmission rate: 2.4, 4.8, 9.6, 14<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store