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SR120-EI02 12/2012

SR120 V1.0

PARADOX.COM

SR120: Indoor Wireless Siren w/Built-In Strobe Light

Description

The SR120 is a stand-alone, fully supervised wireless siren with built-in 
strobe light and wireless transceiver.

The SR120 operates using three size “C” alkaline batteries. With normal 
use, the SR120 will function up to three years without the need to 
replace the batteries. 

The SR120 uses 2-way wireless communication, which provides 
continuous supervision between the panel and siren with fast response 
to alarm signals within 4 seconds.

Features

Built-in transceiver (433MHz or 868 MHz)

Siren that reaches 100dB or more (see 1 below)

Integrated strobe light (see B below)

Fast alarm response time (within 4 seconds)

2.5 hour alarm display (strobe flashes every 4 seconds after bell cut-
off )

Siren presence supervised by control panel 

Wall tamper protection against removal of unit from wall (see 3 
below)

Battery cover tamper protection against cover removal (see 5 below) 

Assign a total of 4 sirens per control panel (including SR150)

Firmware upgradable via 307USB (see 2 below)

Siren test mode 

Overview

Required/Optional Items:

Mounting hardware

3 type “C” alkaline batteries

Compatibility:

MG/SP series v4.0 or higher (except SP4000)

MG6130/MG6160 v3.0 or higher

RTX3  v1.5  or  higher

K32LCD v1.3 or higher

K32LX  v1.0  or  higher

WinLoad v4.7 (with InField Upgrade Software v2.3) or higher

For latest updates visit paradox.com

1) Siren (100dB or more)
2) Infield firmware upgrade connector
3) Wall tamper switch (detects when unit is removed from wall)
4) Test switch
5) Cover tamper switch (detects when battery cover is removed)
6) Battery pack (3 size “C” alkaline batteries)

A) Antenna
B) 

Strobe lights (red and white)

C) 

Signal strength/RF transmission LED. Refer to 

LED Feedback

 

on reverse for more information.

D) Status 

LED

To open the lens cover*:

1) Unlock the battery cover with a screwdriver.
2) Slide the cover open.
3) Open the lens cover as shown.

*Service accessible area only

1

2

3

4

5

6

A

B

C

D

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