Specifications Hign-concerned Chemical:None Model Number:SM-BYD01-2-key Wireless Communication:RF Use:Universal,Projectors,Lighting,Electric Door,Automated curtains Brand Name:CENTURY AOKE Origin:Mainland China RF Wireless 433/315MHz Remote Control 4 Buttons ABS Universal Electronics Garage Door Gate Opener Fixed Learning Code Specifications: Model: SM-BYD01-2-key Operating voltage: DC6V Transmit current: 30 meters Operating frequency: 433MHz Modulation mode: ASK Size: 60*34*12mm Weight: 17.94g Application Field: Scope of application of wireless remote control: Emergency button, alarm, remote control lamps and lanterns, remote control switches, etc., all kinds of intelligent control systems. Basic information Operating voltage: DC6V Transmit current: 30 meters Operating frequency: 433MHz Modulation mode: ASK Feature: -433MHZ Frequency and fixed / learning code, stable transmission. -With high reliability and low power consumption. -The program uses automatically partial code, effectively overcome the traditional shortcomings of remote control code. -Compact design with key-chain, easy to carry. Package Included: Remote control*1 Product Operation Manual*1 Button cell 2016*2 Keychain*1 Shipping Returned 1. All order will shipping out befor 3:00Pm same day(UTC 8:00), when you order after 3:00 the order will send out next day. 2. All order accept free returned when you get the package in 7 days. 3.we warranty 2 years. Note 1.Transition: 1cm=10mm=0.39inch 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!