1,Smart Control: Comes with a wide working frequency of 425‑455MHz, this 8 channel relay module enables better control. 2,Working Modes: The work modes are momentary, self locking, interlock, delay, which can be quickly set by DIP switch. 3,With Feedback: The wireless remote control switch with feedback function needs no configuration as long as the transceiver Frequency and ID settings are consistent. 4,Practical Use: Suits for smart home, home automation, identification system, remote motor control system and so on. 5,Easy to Install: Comes with a light weight and a compact size as well, the installation can be finished in minutes. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.