The Chamberlain LiftMaster CRC390-3KB three button garage door opener remote uses Security+ at 315 and 390 MHz. The CRC390-3KB garage door remote is made by Keystone Heddolf.
Replaces part numbers: 139.53681B, 139.53753, 373LM, 953CB, 953CD and 973LM
Compatible with all Chamberlain, Craftsman and LiftMaster, 315 and 390 MHz garage door openers with a red, orange or purple learn button.
Dimensions: 3" x 1 1/4" x 1/8"
Includes:
- Remote
- Visor clip
- 12v battery
- Instructions
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