Alarm & Detection · System Sensor

Know the moment.

System Sensor 4WTR-B i3 Series 4-Wire Photoelectric Smoke and Heat Detector, 135°F, Form C Relay, White

Price: $209.00Model: 4WTR-B
In stock — ready to ship Free US shipping on orders $500+ · $291.00 to go
Need a project quote?
System SensorShop all System Sensor →
System Sensor 4WTR-B i3 Series 4-Wire Photoelectric Smoke and Heat Detector, 135°F, Form C Relay, White1 / 3
  • Free US shipping
    on orders $500+
  • 30-day returns
    unused, in original box
  • Secure checkout
    Shopify Payments
  • Product help
    before & after you buy

About the 4WTR-B

Designed for straightforward installation and convenient inspection, this conventional smoke detector features a plug-in design and an installer-friendly mounting base. The base supports a range of back box and direct mounting options and provides space for pre-wiring. Attach the detector with the Stop-Drop ’N Lock mechanism.

Includes one 4WTR-B smoke detector and mounting base.

Features an 85 dB sounder, Form C relay, isolated thermal sensor, and in-line terminals. Simplified sensitivity measurement, remote maintenance signaling, and drift compensation and smoothing algorithms support ongoing system maintenance. The cover and chamber are removable.

Specifications

BrandSystem Sensor
Model4WTR-B
Product typeSmoke and Heat Detector

Specs are taken from the manufacturer listing. Need a detail that isn't here? Ask us.

In the box

    Shipping & returns

    Shipping (US)

    • Free standard shipping on orders of $500 or more
    • Standard shipping $8.00 on orders under $500
    • Express shipping $15.00

    Returns

    • 30 days from delivery to request a return
    • Item must be unused, in its original packaging with all parts
    • Contact us first for a return authorization
    Full return policy →