Description: brand new and high quality Feature: Made of high-quality material, durable, firm and has a long service life. Designed with the LED indicator light, let you know the working status in real for time. Manual code matching button, easy and simple to operate. -105db high sensitivity, fast response speed, 100 meters transmitting distance. Self-powered, no battery needed, very easy and convenient to use. Easy and simple to install and remove with the double-side adhesive tapes. Application range: lamp, switch, motor, security modified controller field, etc. Suitable for home room, garage, stairs, office and so on. Specifications: Item Type: Wireless Receiver Module+Switch Material: plastic Size: 5.2x5.5x2.5cm/2.04x2.16x0.9in Color: White+Green Optional Type: A, B, C Working voltage: AC85-250V Max current: AC10A Working frequency: 433mhz Working mode: self-lock, interlock Receiving sensitivity: -105dbm Output mode: voltage output Quantity: 1 PC Note: No retail package. Transition: 1cm=10mm=0.39inch Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Includes: 1 x 1/2/3 for Key Switch 1/2/3 x Wireless Receive Controller Module