About System Sensor 21mA 240 VAC 4-Wire Photoelectric Duct Smoke Detector, D4240

Key Features

Two DDT Form C Relay Contacts

Photoelectric, Integrated Low-Flow Technology

Patented Interconnect Feature for Multi-Fan Shutdown

Built-in Short-Circuit Protection from Operator Wiring Errors

Product Specification

Brand	System Sensor
Category	Duct Detector
DigiMRO Item Code	SSFD4240
Operating Temperature	-20 to 70 deg C
Reset Time	0.03 to 0.3 Sec
Humidity	0-95% (Non-Condensing)
Voltage	24 V AC/DC or 240 V AC
Dimensions	37x12.74x6.36 cm
Frequency	50/60 Hz
Capacitance	270 µF
Current	Stand by: 21 mA
Weight	1.14 kg
Storage Temperature	-30 to 70 deg C

Product Details

Experience advanced smoke detection technology with the System Sensor 21mA 240 VAC 4-Wire Photoelectric Duct Smoke Detector, D4240. This duct detector by System Sensor offers a reliable solution for monitoring smoke levels in HVAC systems. With features like integrated low-flow technology, patented interconnect feature for multi-fan shutdown, and built-in short-circuit protection, this detector ensures optimal safety. The field-selectable settings allow for easy configuration, while the plug-in sensor offers excellent false-alarm immunity. Trust System Sensor for cutting-edge technology and superior fire detection capabilities.

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