System Sensor R-20T Single DPDT Relay with Tamper Detection

Overview

The System Sensor R-20T is a single DPDT relay module with integrated tamper detection, designed for fire alarm and security system integration. Operating at 35VDC, this relay provides dual-pole, dual-throw switching capability and TCP/IP communication for network-based monitoring and control. The tamper detection feature adds an extra layer of system integrity assurance, alerting to any unauthorized access or physical tampering with the device.

Compatibility

The R-20T integrates with System Sensor fire alarm panels and compatible third-party fire and security control systems that support TCP/IP protocol communication. It is suitable for installation in commercial, industrial, and institutional buildings where remote relay switching and tamper monitoring are required.

Key Features

Single DPDT relay configuration

35VDC operating voltage

TCP/IP network communication

Integrated tamper detection

Designed for fire alarm and security system integration

System Sensor R-24T 4-Gang DPDT Relay with Tamper

4-gang DPDT relay module with tamper protection for door and access control

Four independent DPDT gangs switch 10A at 125/250 VAC for door strikes and locks.
Runs on 24 VDC panel supply, integrating directly with standard security control rails.
Integrated tamper detection flags unauthorized module access for system integrity audits.

$161.44 $101.99 Save $59.45

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System Sensor

SKU: R-20E

System Sensor R-20E Single DPDT Relay with EOL

Single DPDT relay with EOL supervision and TCP/IP remote control

DPDT contacts rated 10 A at 125/250 VAC handle door strikes and solenoid loads.
EOL supervision enables remote fault detection and relay state monitoring from the panel.
24 VDC operation aligns with standard fire alarm and security DC supply infrastructures.

$85.37 $53.99 Save $31.38

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System Sensor

SKU: R-10T

System Sensor R-10T Single SPDT Relay Module with Tamper

Single SPDT relay module with tamper detection for networked fire systems

Switches loads up to 10 A at 125/250 VAC for door strikes and notification devices.
Rated 35VDC with SPDT contacts (NO/NC/COM) for flexible wiring in fire alarm panels.
Integrated tamper detection alerts operators to unauthorized module removal or access.

$43.99

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System Sensor

SKU: R-24E

System Sensor R-24E 4-Gang DPDT Relay with EOL

4-Gang DPDT relay module with TCP/IP and EOL supervision for fire alarm control

Four independent DPDT gangs switch up to 10A @ 125/250VAC per gang for load flexibility.
EOL supervision continuously detects open or short circuits, satisfying life-safety code requirements.
Operates at 35VDC input across –40°F to 158°F, suiting harsh industrial and fire alarm environments.

$222.75 $139.99 Save $82.76

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System Sensor

SKU: R-14T

System Sensor R-14T 4-Gang SPDT Relay Module with Tamper

4-gang SPDT relay module with tamper monitoring for addressable fire loops

Four independently addressable SPDT relays distribute switching across zones on one loop.
Operates at 24 VDC across –40°F to 158°F, supporting harsh commercial and industrial sites.
Integrated tamper monitoring alerts the control panel to enclosure access or removal attempts.

$137.99

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