Features: 1. Using LoRa modulation and demodulation technology, it has anti-interference and long-distance communication characteristics 2. Using the original SX1262 scheme, it has - 148dBm receiving sensitivity and 22dBm transmitting power. Support preamble detection, with , automatic subcontracting, 960 cache function 3. Support sending, RSSI output, AT instruction set setting. Support encrypted communication to data transmission security 4. Support multi-level relay networking to increase wireless communication distance. Support upper computer configuration and firmware upgrade, and support customized firmware in large quantities 5. High quality components such as TCXO are used for stable operation under harsh conditions : SX1262 LoRa DTU-HF: HF version frequency is 850~930MHz; Applicable to Europe, America and Oceania Communication interface: Interface type: terminal block: RS485 x 1,RS422 x 1; DB9 male: RS232 x 1; SMA-KE female: 6dBi omnidirectional antenna x one RS485: Anti surge, over-current protection (120R balance resistance pin reserved) RS232: tube protection, surge and anti-static protection RS422: Anti surge, over-current protection (120R balance resistance pin reserved) Wireless parameters: Frequency band: Sub GHz (850~930MHz) Signal modulation: LoRa Encryption type: Transmission power:+22dBm Max Receiving sensitivity: - 148dBm Serial port parameters: Baud rate: 1200~115200bps Check bit: None, odd check, even check Data bits: 8-9 bits Flow control: no flow control Size: 77.0 x 24.0 x 64.2mm Material: aluminum alloy colour: black Package Contents: 1 x SX1262-LoRa-DTU-HF 1 x 868/915M sucker antenna 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.