Description Thank you for visiting our product page! We strive to provide you with an effortless shopping experience. Our checkout process is simple and offers various shipping options with tracking. Furthermore, we believe in maximizing the value of your purchase. On this website, you can find detailed instructions on how to use this product and explore various projects we have created using it. These resources are designed to help you make the most of your purchase. How to use this product — Click on me Free projects and tutorials — Click on me If you have any questions or encounter any issues, our dedicated customer support team is always ready to assist you. Please don’t hesitate to reach out to us through our user-friendly Contact Us page. We are committed to ensuring your complete satisfaction. Lastly, we highly value your feedback. Once you have experienced our product, we would greatly appreciate it if you could leave a review. Your opinion matters to us! Thank you for considering our product. We look forward to serving you. Product details General Features Quad-band 850/900/1800/1900MHz GPRS multi-slot class 12/10 GPRS mobile station class B Compliant to GSM phase 2/2 – Class 4 (2 W @ 850/900MHz) – Class 1 (1 W @ 1800/1900MHz) Bluetooth-compatible: Compliant with 3.0 EDR FM: 76~109MHz worldwide bands with 50 KHz tuning step Control via AT commands (3GPP TS 27.007, 27.005 And SIMCOM enhanced AT Commands) Supply voltage range 3.4 ~ 4.4V Low power consumption Operation temperature:-40 ~85 Specifications for voice Triode – Half rate (HR) – Full rate (FR) – Enhanced Full rate (EFR) AMR – Half rate (HR) – Full rate (FR) Hands-free operation Echo suppression Interfaces 88 LGA pads including: Analog audio interface RTC backup Serial interface Interface to external SIM 3V/1.8V GSM Antenna pad FM Antenna pad Bluetooth-compatible Antenna pad Basic features 51 STM32 AVR MCU compatible The frequency is 850/900/ 1800/1900 MHz Power supply range: voltage is 4.6-5.2v; current is 1A or more (the current is very important). Operating temperature range: -40 degrees C to 85 C Communication interface: The TTL level serial interface is compatible with 2.85/3.3/5v MCU LED: Two led, the Net led and the RING led. SIMCARD: micro SIMCARD holder
