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PAY
About Us
Our Products
Access Cards and FOBS
ADA Access
Automatic Door Hardware
Card Readers
Custom Branding
Keypads
LED Lights
PAL Cloud Management
Photo Eyes
Prima Access Control
Pulse High Security
Receivers
REIGN
Safety Edges
SynQ Prox Mobile Credentials
Transmitters
295 MHz Transmitters
300 MHz Transmitters
310 MHz Transmitters
315 MHz Transmitters
318 MHz Transmitters
360 MHz Transmitters
390 MHz Transmitters
418 MHz Transmitters
433 MHz Transmitters
Reese’s Law GCC
Transmitter/Prox Coil Combo
UHF Long Range Readers
UL 325 Solutions
Uniview Security Solutions
Training
Training Calendar
Past Trainings
FAQs
Contact Us
Blog
PAY
Access Cards and FOBS
ADA Access
Automatic Door Hardware
Card Readers
Keypads
PAL Cloud Management
Photo Eyes
Prima Access Control
Receivers
REIGN
Safety Edges
Transmitters
295 MHz Transmitters
300 MHz Transmitters
310 MHz Transmitters
315 MHz Transmitters
318 MHz Transmitters
360 MHz Transmitters
390 MHz Transmitters
418 MHz Transmitters
433 MHz Transmitters
Transmitter/Prox Coil Combo
UHF Long Range Readers
UL 325 Solutions
Firefly3® 390LMD21K3
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390 MHz Transmitters
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Firefly3® 390LMD21K3
DOWNLOADS
MANUAL
CUT SHEET
Part No: 390LMD21K3
FEATURES
Blue button
One-button
Key chain model
9 dip switches
390 MHz
COMPATIBILITY
Liftmaster® 61LM