Power Supply: Input USB 5V/1A Charging current :500mA Battery Input: 3.7-4.2V It also has a digital RSSI function, RF wake-up function, 4MB flash memory, Low voltage detection, and temperature sensor, Fast wake-up and frequency hopping LED signal indicator, and battery with data backup.
LoRa Spread Spectrum modulation technology Constant RF power output at + 20dBm-100mW voltage change High sensitivity: down to -148dBm Half-duplex SPI communication Programmable bit rates up to 300kbps Supports FSK, GFSK, MSK, GMSK, LoRa and OOK modulation modes
Communication distance: 15KM Sensitivity: down to -148dBm Programmable bit rates: up to 300kbps RSSI dynamic range: 127dB Wireless frequency: 433MHz Working voltage: 1.8-3.7v Working temperature: -40-+80 ℃
Standard:FCC/CE-RED/IC/TELEC/KCC/SRRC/NCC (ESP32 chip) Protocol:802.11 b/g/n Frequency range:2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power:22dBm Communication distance:300m The wireless communication module supports cloud server development and SDK for user firmware development.
168 dB maximum link budget. +20 dBm – 100 mW constant RF output vs. +14 dBm high-efficiency PA. Programmable bit rate up to 300 kbps. High sensitivity: down to -148 dBm. Bullet-proof front end: IIP3 = -12.5 dBm.
Power supply: 3.7V 14500 Lipo battery Or 3.7~12Vdc power Operating Frequency: 915 MHz Size: 40mm x 60mm ATmega328P 8MHz with 3.3V logic/power 3.3V regulator with 500mA peak current output
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