4WTR-B System Sensor 4-wire, Photoelectric i3 Smoke Detector With a Thermal Sensor and Form C Relay.
The 4WTR-B System Sensor is a 4-wire, photoelectric i3 smoke detector with a thermal sensor and Form C relay. Throughout the i3 series, installation is simple with its installer-friendly base and plug-in design. The base accommodates a broad range of back box and direct mounting options and provides ample space for pre-wiring the device. To complete the installation, the i3 detector plugs into its base with a simple Stop-Drop N Lock action.
To reduce the likelihood of nuisance alarms, all i3 detectors are equipped with both drift compensation and smoothing algorithms. These capabilities minimize both short- and long-term causes of nuisance alarms, such as RF interference and dust accumulation.
When connected to the 2W-MOD2 loop test/ maintenance module or an i3 Ready panel, 2wire i3 detectors can generate a remote maintenance signal when in maintenance or freeze trouble condition. To measure the sensitivity of any i3 detector, the SENS-RDR displays the reading, in terms of percent-per-foot obscuration, within seconds.
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