Transmitter Solutions 390LMPB1K3 Remote - 390 MHz

LiftMaster 81LM Compatible 390 MHz Keychain Remote The Transmitter Solutions 390LMPB1K3 Firefly3 is a compact, single-button 390 MHz keychain transmitter designed for seamless compatibility with all LiftMaster® 81LM and 80LM dip switch receivers. Engineered for durability and convenience, it operates on a 10-dip switch configuration and features a bright orange push button in a sleek black housing. Ideal for residential and light commercial gate or garage applications, this remote offers reliable wireless performance with a range of up to 100 feet. Key Features Operating Frequency: 390 MHz Compatible With: LiftMaster® 81LM and 80LM dip switch receivers Compact Keychain Design: Portable and easy to carry Programmable 10-Dip Switch Coding for secure transmission LED Indicator for signal confirmation Battery Type: 12V A23 (included) Operating Range: Up to 100 ft (line of sight) Temperature Range: -20°F to 100°F Warranty: 2 years Technical Specifications Model: 390LMPB1K3 (Firefly3) Number of Buttons: 1 Number of Code Combinations: 1 billion Dimensions: 1-1/2" × 2-1/8" × 3/8" Weight: 1 oz Enclosure: Black case with orange button and keychain ring Conclusion The Transmitter Solutions Firefly3 390LMPB1K3 provides dependable operation and compact portability for LiftMaster 81LM-compatible systems. Its durable construction, long battery life, and secure dip-switch programming make it a top choice for reliable gate and garage access control. Cut Sheet Installation / User Manual