Larco Ultra-Small Receiver Installation

1902 13th Street SE • PO Box 547 • Brainerd, MN 56401

phone 218-829-9797 • toll free phone 800-523-6996 • fax 218-829-0139 • toll free fax 800-589-3705

www.larcomfg.com

AD14-January 2004

Ultra-Small Receiver Installation

NOTE: Read this manual in its entirety before installing any Larco transmitter or receiver. It is important to complete the

programming procedure before installing the receiver in its final location. The installer must have access to the receiver’s

programming button and must be able to view the receiver’s LED (Light Emitting Diode) during the programming

process.

System

The Larco Ultra-Small Transmitters and Receivers operate at 433.92 MHz (acceptable in the United States, Canada and

any European Union member state) and employ code-hopping technology, to reduce false activations. The receiver only

operates after learning a transmitter’s signal through the simple procedure outlined on the next page. This programming

procedure eliminates the need to set dip switches and involves a simple press of  the programming button located on the

top cover of  the receiver (see drawings below for details).

Installation

NOTE: Complete the programming

procedure on the next page before

placing the receiver in its final

location.

1. Mount the receiver in a location

so that the antenna is not

surrounded by metal. Metal

attenuates RF signals causing a

reduction in range and

inconsistency of  signal reception.

Door operator motors and

controls may also cause radio

frequency interference. Locate

the receiver away from the

door control’s motor(s) and

power supply(s). If  the receiver is

mounted in a metal enclosure,

drill a hole in the enclosure and

thread as much of  the antenna as

possible through the hole. This

reduces the effects the metal

enclosure will have on the

receiver’s reception.

2. The receiver comes equipped

with a wiring harness for easy

installation. Follow the color-

coding diagram at right.

Diagram 2: Receiver Wiring Harness.

Orange Wire: Normally Open Relay Output

Brown wire with White Stripe: Normally Open Relay Output Common Connection

Red Wire: 24VAC/24VDC Power

Black Wire: Ground

Purple Wire: 12 VDC Power (CAUTION: DO NOT connect 12 VAC Power)

Brown Wire: Normally Closed Relay Output Common Connection

Yellow Wire: Normally Closed Relay Output

Diagram 1: Receiver (left) and Transmitter (right) Dimensional Diagrams

Programming Button

Antenna

See Regulatory Notice on Next Page