Describe Unique design: 433 MHz RF wireless remote control. Stable and reliable performance, receiving sensitivity (>-105 dBm). Strong signals can penetrate walls, floors, and doors. It can penetrate walls, floors, and doors to control the receiver from any location within a reliable distance. Easy to use: Very easy to set up and reset. There are 3 operating modes to choose from (momentary/toggle/latching mode). You can easily and independently configure the product's operating mode according to your needs. The design has been set to lock mode. The ON button lights up and the OFF button goes out. High sensitivity: The receiver uses a 30A relay, which can load high-power electrical appliances and ensure long-term stable control. Each receiver can store approximately 20 transmitters. Furthermore, one transmitter can control multiple receivers (the transmitter must match the receiver). High Quality: The heavy-duty connectors can withstand 30A current and function normally even under