Transmitter Solutions Firefly3 315 Manual page 2

"NORMAL MODE"
LiftMaster 312 HM Receiver -"NORMAL MODE":
Operating frequency : 315 MHz
Number of buttons : 1
Battery : 1 ea. 12V A23
Operating temperature : -20°F - 85°F
Overall dimensions : 1-1/2 x 2-1/8 x 3/8 inch
Weight: 1 oz.
Black Case with Light Blue Button
Case
Notch
Screw