Description: REMOTE CONTROL - EASY to SETUP and USE. Stable and reliable performance, high receive sensitivity. EXCELLENT STABILLITY - The relay module provides high signal sensitivity at lower cost and resist interference. STRONG SIGNAL - Can pass through walls, floors and doors, control receiver from any place within a reliable distance. MORE FLEXIBILITY - It adopts non-directional wireless encoding technology, allowing control without mutual interference, can be flexibly configured in quantity and in operating modes WIDELY APPLICATION - Can be used in industrial control, agriculture, home automation and security fields, such as remote control lights, sirens, locks, motors, fans, winches, linear actuators, doors, windows, electric solenoid valves, security alarm, business signs and various devices. Specification: Operating voltage: DC 12V Output current: 10A Working frequency: 433mHz Channel: 1 channel Receiving sensitivity: -105dbm Working mode: Tap, interlock, self-lock Modulation: ASK Encoding mode: intelligent-learning code Remote distance: 100meters Package Includes: 4 Pieces 1-Channel Relay Receivers 1 Piece Remote Control Transmitter(4 Pack)