Usage Tips:brand and high quality Features: Electronic tool equipment Smart-family, Repair tools for the for Smart family, Computer & Office, Consumer Electronics, Electronic Components & Supplies, Phones & Telecommunications, Office & School Supplies. Small size, high sensitivity, low power consumption, flexible operation. Quickly respond and send out signal to the mating unit for easy control when press the button. Designed with one button, it is easy to use. And the remote control distance can reach 50m in the open area. Widely used in remote control switch, remote control garage door, remote control electric shutter, alarm unit, industrial control products, etc. Receiver & Transmitter only, other accessories demo in the picture are not included! Working/output way: 1. Toggle/Self-Lock: Press- > On; Press again- > Off press one button for one for time is working/ON .press the same button again is stop/OFF .(1 channel switch(receiver) need 1 button remote control (transmitter). 2. Latched/Inter-Lock: Press- > On; Press other button- > Off press one button is working/ON ,press another button is stop/OFF . ( 1 channel switch( receiver) need 2 buttons remote control (transmitter). 3. Momentary/Jog: Press and hold- > On; Release- > Off Keep pressing one button is working /ON. loosen your finger is stop/OFF .1 channel switch(receiver) need 1 button remote control (transmitter ) 4. Learn:Press the learning code,Loosen your finger ,press any button of the remote control ,the indicator flash 2 times and off .it means learning successfully . 5. Remove:Press the learning button about 8 seconds , the indicator turn on to off , it means the Code had been removed successfully. Specification: Material: Plastic + Metal Channel: 1 CH Buttons: 1 Button Operating Frequency: 433MHz Power Supply: Built-in Button Battery Remote Control Distance: 50m/ 164.04ft Color: Black, White Size: One Size Dimameter: 4.5cm/ 1.77in Height: 1.3cm/ 0.51in Quantity: 1 Pc Note: 1.No retail package. 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! Package includes: 1 Pc x Transmitter