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SPECIFICATIONS

Maximum Operating Voltage: 

3.3 VDC

Maximum Current Draw: 

5.0 mA (LED on)

Average Operating Current: 

210uA

Maximum Transmit RF Power: 

17dBm

Radio Frequency Range: 

902-928 MHz

Temperature Range: 

32°F to 120°F (0°C to 49°C)

Humidity: 

10% to 93% Non-condensing

Battery Type:  

4 Panasonic CR123A or 4 Duracell DL123A

Battery Life:  

2 year minimum

Battery Replacement: 

Upon TROUBLE BATTERY LOW display and/or during annual maintenance

Dimensions: 4

¼

in. H x 4

¼

in. W x 1½in. D

Accessories: 

SMB500 Electrical Box (preferred mounting option)

BEFORE INSTALLING

This information is included as a quick reference installation guide. Refer to 
the control panel installation manual and the SWIFT Wireless Manual for de-
tailed system information. If the modules will be installed in an existing op-
erational system, inform the operator and local authority that the system will 
be temporarily out of service. Disconnect power to the control panel before 
installing the modules.

NOTICE: This manual should be left with the owner/user of this equipment.

GENERAL DESCRIPTION

The WSK-RELAY Relay Module is intended for use with a wireless gateway or 
wireless fire alarm control panel (FACP). It allows a compatible control panel 
to switch discrete contacts by code command. The relay contains one isolated 
set of Form-C contacts, which operate as a SPDT switch and are rated in ac-
cordance with the table in this manual. A single relay module may be used to 
activate only one output device. Two relay modules must be used in parallel to 
activate multiple devices such as a NAC expander. Circuit connections to the 
relay are not supervised by the module. The device communicates through a 
robust, bi-directional mesh network to the gateway and/or FACP. Rotary dial 
switches are provided for setting the module’s address. The module has a 
panel controlled LED indicator. (Figure 1)

FACEPLATE

The faceplate includes a magnet for activation and tamper resistance (Figure 
2). The faceplate magnet activates communication to the panel, therefore, the 
faceplate must be installed for the module to work properly. The magnet also 
activates a supervisory tamper fault at the panel if the nameplate is removed. 
Do NOT remove this magnet. The faceplate for a wireless module CANNOT be 
replaced with the faceplate of a standard wired module.

I56-4272-000

INSTALLATION AND MAINTENANCE INSTRUCTIONS

C1095B-00

FIGURE 2. FACEPLATE INTERIOR:

 

MAGNET LOCATION
(DO NOT REMOVE)

C1098-00

RELAY CONTACT RATINGS:

CURRENT RATING

MAXIMUM VOLTAGE

LOAD DESCRIPTION

APPLICATION

2 A

25 VAC

PF = 0.35

Non-coded

3 A

30 VDC

Resistive

Non-coded

2 A

30 VDC

Resistive

Coded

0.46 A

30 VDC

(L/R = 20ms) 

Non-coded

0.7 A

70.7 VAC

PF = 0.35

Non-coded

0.9 A

125 VDC

Resistive

Non-coded

0.5 A

125 VAC

PF = 0.75

Non-coded

0.3 A

125 VAC

PF = 0.35

Non-coded

FIGURE 1. CONTROLS AND INDICATORS:

12 Clintonville Road, Northford, CT 06472-1610

Phone: 203-484-7161 Fax: 203-484-7118

www.silentknight.com

 

WSK-RELAY  

Wireless Relay Module

  

I56-4272-000 

 

 03-02

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