Adopting diversity technology, it can provide stable communication in the 400-550MHz frequency band 2x100mW transmission power ensures reliable operation over long distances. The receiver supports 3.6-5.5V input voltage and is compatible with a variety of power supplies. Its compact size and weight easy to integrate into various systems Integrates two LR1121 chips, with high-precision C3 and TCXO components to stable operation, high receiving sensitivity and minimum frequency interference over a wide frequency range Frequency range: 400-550MHz IC: 2xLR1121+C3+TCXO Transmit power: 2x100mW Interface: 2xIPEX 1 Input voltage: 3.6-5.5V (The product appearance and printed words depending on the batch, but this does not affect use) Color: As shown Material: PCB Package Contents: 1 x Receiver Kit 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.