Features: Made of high quality ABS material,durable in use. Professional manufacturing, quality assurance, high reliability. It is a wireless controller that learns the code, and the output/work mode can be changed as desired, and it is easy to match the transmitter. Small size, light weight, stable and reliable performance, high receiving sensitivity. It can be applied to remote power switch, anti-theft alarm, remote control electric door lock, remote control electric shutter door and window, water pump remote control, industrial control products, etc. Specifications: Condition: Brand New Material: ABS Weight: (Metal Waterproof Silicone Four Button Remote Control) Approx.110g/3.9oz (Metal Four-Button Alarm Button Remote Control) Approx.110g/3.9oz (Round Four-Button Remote Control) Approx.105g/3.7oz (Metal Four-Button Wireless Remote Control Rf Learning Code Remote Control) Approx.120g/4.2oz Wireless Module: Working voltage: DC12V Quiescent current: ≤8mA Working current: ≤110mA Working temperature: -40°C - +80°C Receive sensitivity: 3-105dBm Operating frequency: 433MHz Wireless Remote: Working voltage: 4.5V ~ 6V Working current: ≤ 4.3mA Working frequency: 433MHz Transmitting power: 10~15mw Launch distance: 80m-100M (open space) Frequency deviation: ±0.1MHz Coding chip: EV1527 Oscillation resistance: 4.7M Number of buttons: 4 Modulation method: ASK Quiescent current: 0uA Working current: -20°C ~ +70°C Package List: 1 * Remote Control (Built-in Battery) 1 * Module