WAYNE-DALTON model 3973C transmitter. It transmits using on frequency 372 MHz. It has 3 button(s).
The warranty on the 3973C garage door transmitter is 1 year from WAYNE-DALTON.
The model 3973C is still available.
WAYNE-DALTON model transmitter instructions and owners manual in PDF format at NO CHARGE!
VIEW / DOWNLOAD by clicking HERE
wayne_dalton_3973c_om.pdf
(0.23 MB in English) This requires Acrobat 10 or higher