Edwards SIGA-WTM Module Waterflow

The Edwards SIGA-WTM is a commercial addressable waterflow and tamper module designed for compatible Edwards Signature Series fire alarm systems. It provides two supervised Class B initiating device circuits, allowing one module to monitor both a sprinkler waterflow alarm switch and a supervisory tamper switch from a single installation.

The module is factory configured specifically for sprinkler monitoring applications, with a delayed latching alarm input for waterflow and a separate supervisory input for tamper switches. Automatic addressing, onboard diagnostic LEDs, and Signature Series communication simplify installation and maintenance. This product is intended exclusively for commercial fire alarm installations.

Product Functions

• Monitors sprinkler waterflow alarm switches
• Monitors valve tamper supervisory switches
• Provides two supervised Class B initiating device circuits
• Reports alarm and supervisory conditions independently
• Delayed waterflow alarm operation
• Automatic electronic addressing
• Continuous Signature loop communication
• Onboard diagnostic LED indication

Electrical & System Information

The SIGA-WTM communicates over the Edwards Signature Series Signaling Line Circuit (SLC) and receives operating power directly from the Signature Loop Controller. The module automatically receives its addresses from the loop controller or can be assigned custom addresses through compatible programming software.

Factory-assigned personality codes configure Input Channel 1 for delayed waterflow alarm operation and Input Channel 2 for supervisory tamper monitoring. The module requires two SLC addresses, one for each monitored circuit.

Features

• Commercial addressable waterflow and tamper module
• Two supervised Class B initiating device circuits
• Dedicated waterflow and tamper monitoring
• Automatic electronic addressing
• Uses two Signature module addresses
• Delayed waterflow alarm operation
• Separate supervisory circuit
• Green polling LED
• Red alarm/active LED
• High-impact engineering polymer housing
• Compact one-gang design
• Signature Series communication

Mounting & Design

The SIGA-WTM is designed for installation in a 2½-inch deep single-gang electrical box or a 4-inch square electrical box with a one-gang cover. Optional Signature mounting plates and surface-mount boxes are available for additional installation flexibility.

The module features removable terminal blocks accepting 12–18 AWG wiring, allowing straightforward field wiring and servicing while maintaining a compact footprint.

Protection & Applications

Suitable for:

• Sprinkler Waterflow Switches
• Valve Tamper Switches
• Fire Sprinkler Systems
• Mechanical Rooms
• Commercial Buildings
• Industrial Facilities
• Healthcare Facilities
• Educational Campuses
• Commercial Fire Alarm Systems

Compatibility

Compatible with:

• Edwards Signature Series Fire Alarm Systems
• Signature Loop Controllers
• Signature Series Signaling Line Circuits
• Normally Open Waterflow Switches
• Normally Open Supervisory Tamper Switches
• SIGA-MP Mounting Plates
• Surface Mount Boxes
• Compatible Edwards Intelligent Fire Alarm Panels

Always verify compatibility with the installed Edwards fire alarm control panel, Signature loop controller, initiating devices, firmware version, and project requirements before installation.

Technical Specifications

Manufacturer: Edwards

Series: Signature Series

Model: SIGA-WTM

Product Type: Addressable Waterflow/Tamper Module

Communication: Signature Series SLC

Module Addresses: Two

Circuit Type: Two Class B Initiating Device Circuits

Waterflow Circuit: Delayed Latching Alarm

Supervisory Circuit: Active Latching

Operating Voltage: 15.2–19.95 VDC

Standby Current: 396 µA

Activated Current: 680 µA

End-of-Line Resistor: 47 kΩ

Maximum IDC Resistance: 50 Ω (25 Ω per conductor)

Maximum IDC Capacitance: 0.1 µF per Channel

Status Indicators: Green Poll LED, Red Alarm/Active LED

Operating Temperature: 32°F to 120°F (0°C to 49°C)

Operating Humidity: 0%–93% RH Non-Condensing

Construction: High-Impact Engineering Polymer

Mounting: Single-Gang or 4-Inch Square Electrical Box

Application: Indoor Commercial Fire Alarm Systems

Listings: UL Listed, ULC Listed, CSFM Listed, and MEA Approved (application dependent). Verify product labeling and project requirements before installation.

Applications

The Edwards SIGA-WTM is designed for commercial fire alarm systems requiring dedicated monitoring of sprinkler waterflow and valve tamper switches. Typical applications include office buildings, schools, hospitals, industrial facilities, warehouses, retail centers, high-rise buildings, and other commercial occupancies utilizing Edwards Signature Series addressable fire alarm systems and automatic sprinkler systems.

Download the Specification sheet in *.pdf format