When 318 Is Printed On The Back Of Your Wall Transmitter You Can Use This Item.
The 639T transmitter has three buttons for Open, Close, and Stop commercial operator functions and one rotary switch to select which receiver/operator to control. The stop button is colored red for easy identification. Up to 9 three channel commercial door or gate receivers can be independently controlled by the 639T transmitter.
The Model 639T is compatible with 831R, 831RJ, MVP-3CH-24V-3T-4W, MVP-3CH-12V-8W-FC, MVP-3CH-24V-8W-FC, MVP-RE-24V-8W-FC, and MVP-MR 3-Channel receivers used in Open, Close, Stop applications.
Availability: Usually ships the next business day