Features Smart Control: Comes with a wide working frequency of 425‑455MHz, this 8 channel relay module enables better control. Working Modes: The work modes are momentary, self locking, interlock, delay, which can be quickly set by DIP switch. With Feedback: The wireless remote control switch with feedback function needs no configuration as long as the transceiver Frequency and ID settings are consistent. Practical Use: Suits for smart home, home automation, identification system, remote motor control system and so on. Easy to Install: Comes with a light weight and a compact size as well, the installation can be finished in minutes. Specification: Item Type: Remote Control Module Material: ABS Working Voltage: DC 8-30V Working Current: 12-260mA Output Channel: 8 channels 10A relay output。 Working Frequency Band: 425-455MHz, can be set by DIP switch. The Longest Transmission Distance in the Field: Approx. 2000m / 6561.68ft Package List: 1 x Remote Control Module 1 x Antenna Note: Pay attention to the correct operation. Package List 1 x Remote Control Module 1 x Antenna