1. On board for Pico interface, applicable to Pico series motherboards 2. UART interface communication, serial port AT control 3. Support SMS, phone, GPRS, DTMF, HTTP, , , email and other functions 4. Support Bluetooth 3.0 for Bluetooth data transmission 5. Support real-time clock, with rechargeable lithium battery Microphone and speaker interfaces are supported for making calls Two LED indicators on board for easy viewing of module operation status Onboard nano slot Product model: SIM868 -IOT: Not supported -M: Not supported 2G:GSM 850/EGSM 900/DCS 1800/Pcs 1900MHz GNSS:GPS GLONASS Bei Dou Applicable regions: most countries and regions Communication protocol: /UDP/HTTP///POP3/SMTP/MQTT, etc Power supply mode: through lithium battery interface or USB interface for Pico Lithium battery interface: 3.7V-4.2V level: 3.3V Current consumption of single mode unit: Idle mode: 12mA Sleep mode: 0.65mA mode: 8uA Audio input and output: on-board microphone with speaker output Indicator light: NET: network indicator light; Charge: charging indicator Switch: lithium battery and USB power supply switch card: 2G card, domestic only supports mobile card (1.8V/3V) Antenna interface: LTE, GNSS, BT Product size: 76.15 x 24.00mm Colour:blue Material:PCB+metal Package Contents: 1 x PICO-SIM868-GSM/GPRS/GNSS 1 x LTE antenna 1 x GPS antenna 1 x Bluetooth antenna 1 x 20PIN straight 1 x 40PIN straight pin 1 x 3.7 Rechargeable lithium battery 1 x Small horn Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.