Usage Tips: Supports high voltage 5-9V receiver. 300W power relay. Transparent heat shrinkable tube allows clear visibility of LED status, with a stylish appearance. Two LEDs indicate working status. Max DC30V 10A. Includes no signal protection. Features boot protection for easy operation. Input channels do not require calibration, compatible with various brands of remote control devices. Compact size and lightweight design. Application range: - Remote control model rocket launch - Remote control model smoke control - Weapon system control for realistic models - Model aircraft smoke control - Control of various remote switch systems - Switching signals between two cameras - Control the on/off function of various electrical power sources, such as navigation lights, searchlights, strobe lights, buzzers, etc. - Control camera shutter or switch between camera recording modes Color: As shown Material: PC + Metal Package Contents: 2 x RC relay switch Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.