ELK-AEXRFA — Alarm Engine Bus Adapter for RF Receiver/Transceiver Installation Instructions

Installation instructions for the ELK-AEXRFA Alarm Engine Bus Adapter — connects an ELK Alarm Engine RF receiver or transceiver to the Alarm Engine RS-485 data bus, accepting either the ELK-AERF3 319.5MHz receiver or the ELK-AERF9 two-way transceiver.

Application

The ELK-AEXRFA is an adapter for connecting an Alarm Engine RF receiver/transceiver to the Alarm Engine RS-485 data bus. It accepts an ELK-AERF3 319.5MHz receiver or ELK-AERF9 two-way transceiver. Up to 4 AEXRFA adapters may be connected to the data bus.

Specifications

Receiver/Transceiver Installation

Before installing the RF Bus Adapter, turn the E27 Master Power Switch OFF.

1. Remove the cover from the AEXRFA housing and locate the 6-pin connector and 3 screw studs in the upper left corner.
2. Carefully align the 6-pin male connector in the lower right corner of the AERF3 or AERF9 wireless receiver/transceiver with the 6-pin female connector on the AEXRFA board. Ensure the wireless receiver/transceiver is fully seated into the connector.
3. Install the 3 provided screws through the wireless receiver/transceiver into the screw studs located on the AEXRFA board.
4. The AEXRFA adapter includes two offset antennas. When using the adapter with the AERF3, use the longer antenna; when using it with the AERF9, use the shorter antenna. Install the appropriate antenna in the ANT terminal on the receiver/transceiver.

Data Bus Wiring

CAT5 or CAT6 wire (4-pair, 8-conductor) is highly recommended for all data bus cables — extra wires may be required for data return paths where multiple homeruns or devices are installed. Use 4 conductors to connect terminals BUS +12V, Data A, Data B, and Neg from the control to terminals +12V, A, B, and Neg on the AEXRFA.

Refer to the E27 manual for important guidelines on proper termination and wiring of systems with multiple homerun connections for data bus devices. Minimum conductor size is 22 or 24 gauge; maximum resistance per wire is 25 Ohms. Device placement beyond 1000' is not recommended. A terminating jumper (JP1) is provided on-board for terminating the RS-485 data bus at the last device on a run.

Please refer to the ElkConnect app instructions for details on enrolling the AEXRFA in the E27 system.

Warranty & Compliance

The ELK-AEXRFA RF Bus Adapter is warranted to be free from defects in materials and workmanship for a period of 2 years from date of manufacture. Elk makes no warranty, express or implied, including merchantability or fitness for a particular purpose, with regard to batteries used with wireless devices. Refer to Elk's website for the full warranty statement.

This device complies with Part 15 of the FCC Rules and Innovation, Science and Economic Development Canada's licence-exempt RSS standards. Operation is subject to the condition that the device must accept any interference received, including interference that may cause undesired operation.