LR900 Node
Hardware Installation and User Guide
9000-0000-126 Revision 01
7 of 21
Genave Electronics
Overview
How it Works
The LR900 Node is a stand-alone transceiver/controller that utilizes FHSS (Frequency
Hopping Spread Spectrum) to communicate and synchronize actions with other LR900 nodes
or LR900 Keypads.
Keypads are normally the origination point for commands. When a button is pressed on the
LR900 wireless keypad, a signal is transmitted to all Nodes within range. Any LR900 Node
which hears this signal does two things; First it activates its own corresponding output and
then it retransmits the signal to reach additional LR900 Nodes who may not have heard the
original signal. If an LR900 has already heard the signal, it ignores all future receipts of that
particular signal to keep the signal from repeating forever.
Each node has 8 inputs and 8 outputs. If one of the inputs is activated (shorted to common),
The LR900 activates the corresponding output for 2 seconds (Ex: Input 1 activates Output 1).
Optionally, the LR900 can transmit to all of the other LR900 Nodes that its input has been
activated (See Advanced Info).
Communications between LR900s is performed peer-
peer. By using this method it’s
unnecessary to have a master controller and LR900
’s can be installed, relocated or removed
without needing to register them into or out of a system.
