Aritech Dx700 Series Conventional Auto-Reset Multisensor Detector with Relay (DP721RTA)

The Aritech DP721RTA is a Dx700 series conventional multisensor detector (optical and heat) with an on-board relay and automatic reset. Combining smoke and heat sensing gives a fast response to both flaming and smouldering fires, and the detector resets itself when the event clears.

Important: the manufacturer states that the DP721RTA must not be used in applications requiring compliance with commercial or residential fire standards such as EN 54-5, EN 54-7, EN 54-29, CEA 4021 or EN 14604. Always ensure compliance with local codes and standards.

Key features

• Optical light-scatter and heat sensing in one head
• Automatic reset when the event clears
• Relay with COM/NO/NC contacts for easy supervision on any system
• Daily automatic self-diagnostics with drift compensation
• Separate fire and fault LEDs
• Magnet-activated sensitivity test mode
• Field-exchangeable, disposable optical chamber
• Wide operating voltage and polarity insensitive

Technical specifications

• Compatibility: Aritech conventional zones, 700 series conventional base
• Operating voltage: 8.5 to 33 V DC
• Current consumption: 100 µA quiescent, <60 mA in alarm
• Smoke sensitivity: 10%/m (+1.6%, -3.3%)
• Heat: rate-of-rise 8°C/min above 40°C, class A2
• Relay output: NO/C/NC, 1 A at 30 V DC, 0.5 A at 120 V AC
• Reset voltage: <2.5 V; reset time 1 s
• Dimensions: 100 mm diameter x 50 mm
• Weight: 112 g
• Colour: cloud white (RAL 9001)
• Operating temperature: -10 to +60°C
• Relative humidity: 0 to 95% non-condensing
• IP rating: IP43 (indoor)