1. Introduzione
The LiftMaster 850LM Universal Gate and Garage Door Opener Receiver is designed to provide secure and convenient access control for gated communities, industrial facilities, and commercial sites. Utilizing Security+ 2.0 technology, this universal receiver minimizes radio interference and enhances security. It is compatible with LiftMaster 811LM, 813LM, and all MAX remote controls, offering a versatile solution for various access needs.

Image: The LiftMaster 850LM Universal Receiver unit.
2. Configurazione e installazione
The 850LM receiver features a compact design suitable for most gate and commercial door operators. It expands to three channels, allowing for control of multiple devices or functions:
- Canale 1: Supports up to 50 remote controls.
- Canale 2: Supports up to 20 remote controls.
- Canale 3: Supports up to 20 remote controls.
2.1. Cablaggio del ricevitore
The receiver requires a 12 Volts (DC) power supply. Connect the power wires to the AC/DC terminals on the receiver. For triggering the gate or garage door opener, connect the Normally Open (N.O.) and Common (COM) terminals of the desired channel on the 850LM to the corresponding trigger input terminals on your gate or garage door operator's control board. Ensure all connections are secure and follow the wiring diagram provided with your specific gate or garage door operator for proper integration.
2.2. Programmazione dei telecomandi
To program a remote control to the 850LM receiver:
- Identify the desired channel button (CH.1, CH.2, or CH.3) on the 850LM receiver.
- Press and hold the channel button on the receiver. The corresponding LED light will illuminate, indicating it is in programming mode for approximately 30 seconds.
- While the LED is illuminated, take your compatible remote control (e.g., 811LM, 813LM, or MAX remote).
- Press and hold the button on the remote control that you wish to program.
- The LED on the receiver will flicker and then turn off, indicating successful programming.
- Rilasciare il pulsante sul telecomando.
Repeat this process for any additional remote controls or channels you wish to program.
3. Funzionamento del ricevitore
Once programmed, the remote controls can be used to operate the connected gate or garage door opener. Pressing the programmed button on your remote will send a signal to the 850LM receiver, which then activates the corresponding channel to trigger the operator. The 850LM supports various functions such as open, close, and stop, depending on how the channels are configured and wired to your operator's control board.
4. Manutenzione
To ensure optimal performance and longevity of your LiftMaster 850LM receiver, consider the following maintenance tips:
- Keep the receiver unit clean and free from dust, debris, and moisture.
- Controllare periodicamente tutti i collegamenti elettrici per assicurarsi che siano saldi e privi di corrosione o danni.
- Test your remote controls regularly to confirm they are functioning correctly and replace batteries as needed.
5. Risoluzione Dei Problemi
If you encounter issues with your 850LM receiver, try the following basic troubleshooting steps:
- Nessuna risposta da remoto: Check the remote control's battery. Ensure the receiver has power and its indicator lights are on. Re-attempt the remote programming procedure.
- Funzionamento intermittente: Verify that the receiver's antenna is unobstructed and properly positioned. Check for potential sources of radio interference in the vicinity.
- Problemi di alimentazione: Confirm that the power supply to the receiver is stable and within the specified voltagGamma e (12 V CC).
For persistent issues, consult a qualified technician or contact LiftMaster customer support.
6. Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Produttore | Liftmaster / Chamberlain |
| Numero di parte | 850LM |
| Peso dell'articolo | 1.6 once |
| Dimensioni del prodotto | 6 x 5 x 3 pollici |
| Numero modello articolo | 850LM |
| È stato interrotto dal produttore | NO |
| Colore | Grigio |
| Materiale | Policarbonato |
| Voltage | 12 Volt (CC) |
| Quantità del pacchetto dell'articolo | 1 |
| Certificazione | FCC Parte 15 |
| Componenti inclusi | Receiver, Transmitter |
| Batterie incluse? | NO |
| Sono necessarie batterie? | NO |
| Tipo di cella della batteria | Alcalino |
7. Informazioni sulla garanzia
For detailed warranty information regarding your LiftMaster 850LM Universal Receiver, please refer to the documentation included with your product or visit the official LiftMaster websito. I termini e le condizioni della garanzia possono variare.
8. Assistenza clienti
Should you require further assistance with installation, operation, or troubleshooting, please contact LiftMaster customer support. Contact information can typically be found on the product packaging or the official LiftMaster websito.





