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SA823 U-NET REPEATER

The SA823 is a signal repeater to extend the range of U-Net two-way wireless technology. It is fully

compatible with any U-Net enabled sensors and controller.

The signal repeater is designed to be installed by a system installer in cases where signal reception is

poor or extended range is required for the home. The repeater does not alter the existing binding

network between gateway and devices, in fact devices do not need to be physically removed from their

mounting location when adding the repeater. This allows the installer to service the user in the shortest

time possible without disrupting to the home interior.

It comes with installer friendly feature such test mode to indicate signal strength using LED display and

audible beeps for areas not in line of sight such as corners. Powered by backup battery, this allows the

repeater to be easily placed anywhere while searching for its optimum location. There is the also a

Beacon mode which allows the installer to conveniently walk around the home to observe signal

strengths from the gateway when deciding on the best location.

Product Overview

Front View

View with Battery Cover removed

Repeater network overview

The role of the Repeater in a U-Net network can be summarized in the diagram below.

Level :

Repeaters are distinguished into Level-1

and Level-2 as set by their Level jumper

setting. Each pair of Level-1 and 2

repeaters define a unique signal path to

the gateway. Signals from each pair will

not cross over to another pair.

- Level-1: Repeater closest to the gateway. In most cases adding a Level-1 Repeater is sufficient to

cover a wide range. A gateway can have more than one Level-1 Repeaters to branch out at different

angles from the gateway.

- Level-2: Repeater to extend signal from Level-1 Repeater. Only one Level-2 repeater can be added for

each Level-1 Repeater.

To create the link between the pairs, repeaters must perform U-net binding with each other. Repeaters

with the same level cannot bind with each other.

Lastly, like all end devices under the gateway’s network, each repeater must perform U-net binding with

the gateway. This ensures the gateway is aware of the repeater’s own condition such as low battery,

tamper, etc.

Note: It is advisable to use as few Repeaters as possible in a network in order to reduce signal hops

between device and Gateway. Like any wireless network, more signal hops not only mean longer delay

in transmission but also adds higher risk of signal interference resulting in lost messages as more

devices are added. This degrades the overall network quality.

Join:

The repeater becomes associated with an end device through ‘Joining’. This is a loose form of binding

that tells a repeater which devices it should repeat signals for and which do not. Joining is a manual

process similar to U-net binding except there is no need to remove end devices from their mounting

position to activate a learn key. Simply trigger the end device for it to transmit its ID which is then picked

up by the repeater. Joining does not disrupt the original U-net binding between end devices with

gateway.

Inversely, a device is disassociated from the Repeater through ‘Un-join’. Removing a device from the

Repeater’s memory helps to reduce unnecessary transmission of RF signal which will improve overall

quality of the network.

LED Table

The table below describes the LED indication at various stages of the unit’s operation.

Pairing stage:

During the Repeater’s pairing activity, Status LED along with the buzzer beeps indicate the status of the

paring.

Status Status LED Buzzer Beep

Factory reset state. Repeater not

aired to an

Gatewa

After power up, Blinks RED

ever

2 secs for 30 secs.

None

Enter pairing mode Steady RED Short beeps every 1 sec, followed by

1 lon

beep

Waiting to bind with gateway, time out

in 30 secs.

Blink RED, every 1 sec Short beeps every 1 sec

Pairing successful LED OFF 1 Long beep

Pairing fail after time out or

terminated

Flashes RED 3 times Short beep 3 times

Joining fail because exceed device

limit

On RED for 1 sec then OFF 3 short beeps

Device Un-

oin successful LED OFF 2 Lon

beep

Level-2 Repeater disconnected

successful

LED OFF 2 Long beep

Activate Factor

Reset Stead

RED Short beeps, followed b

1 lon

beep

Testing stage (Mode switch set to TEST)

During Test mode, RF LED and the buzzer beeps indicate the signal strength.

RF LED

–

Test Mode Buzzer beep sound Description

Flash GREEN 3 times Short beep 3 times Signal is Good, Test mode

Flash ORANGE 2 times Short bee

2 times Si

nal is Normal, Test mode

Flash RED 1 time Short bee

1 time Si

nal is Weak, Test mode

Flash GREEN 3 times Lon

bee

3 times Si

nal is Good, Beacon mode

Flash ORANGE 2 times Long beep 2 times Signal is Normal, Beacon mode

Flash RED 1 time Lon

beep 1 time Si

nal is Weak, Beacon mode

RF Stat

Batt

Wall

Rear View

Back

Mode Switch

Tamp

Buzze

Factory

Level Jumpe

Learn Button

Summary of content (5 pages)

PAGE 1
SA823 - Level-1: Repeater closest to the gateway. In most cases adding a Level-1 Repeater is sufficient to cover a wide range. A gateway can have more than one Level-1 Repeaters to branch out at different angles from the gateway. U-NET REPEATER The SA823 is a signal repeater to extend the range of U-Net two-way wireless technology. It is fully compatible with any U-Net enabled sensors and controller. - Level-2: Repeater to extend signal from Level-1 Repeater.
PAGE 2
Status LED – Test Mode Flashes ORANGE, every 1 sec Note : - Each Repeater supports a maximum of 8 devices. - Keypad and Siren devices are NOT supported by this Repeater. - Remote keyfobs do not need to Join to any Repeater. All Repeaters will retransmit signals from Remote Keyfobs in the same network. - A Repeater will Join only devices from the same gateway paired to the Repeater - A device can Join to only one Repeater at any one time.
PAGE 3
2. Press the Tamper switch on the Repeater. The ping signal will be sent every 5 secs. The Repeater will indicate the received signal strength as follows: *same as Test Mode but long beeps instead of short beeps 3. Set the Mode switch back to Normal mode to exit. 2. Once completed, setting its Level jumper to Level-2. 3. Set the unit into pairing mode by press and holding its Learn button for 3 secs until a long beep sound is heard, then release the button. The unit is now ready to pair for 30 secs.
PAGE 4
www.everspring.com Reset To Factory Default 50 Sect. 1 Zhonghua Rd Tucheng NewTaipeiCity 236 Taiwan.. To reset the unit back to factory default state: 1. 2. Press and hold the Learn button for 3 secs until a long beep sound is heard, then release the button. Within 30 secs, press and hold the Learn button again but this time for more than 6 secs until another long beep sound is heard. This indicates the reset is complete. The LED will blink every 2 secs indicating no paired ID code is stored its memory.
PAGE 5
Appendix A : Repeater test matrix table Target: End Device 1. Set Mode switch to To Enter 'Test' 2. Trigger/Activate the device Target: Gateway To Enter Target: Level-2 Repeater 1. Set Mode switch to 'Test’. 2. Press Tamper switch on To Enter Repeater to start Beacon Mode. Target: Level-1 Repeater 1. Set Mode Switch on Level-1 Repeater to 'Test'. 2. Press Tamper switch on Level-2 Repeater to start Beacon Mode. At every 5 secs: Level-1 Repeater 1.