CRAFTSMAN / SEARS model 139.53681B transmitter. It transmits using on frequency 390 MHz, Security plus (390 Mhz). It has 3 button(s).
The warranty on the 139.53681B garage door transmitter is 1 year from CRAFTSMAN / SEARS.
The model 139.53681B is discontinued.
CRAFTSMAN / SEARS model transmitter instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
(0.23 MB in English, Spanish) This requires Acrobat 10 or higher