Photoelectric smoke detector JTY-GD-A30E

2-wireindoorwith data logging

Overview
The JTY-GD-A30E point-type photoelectric smoke detector is an addressable, two-wire device designed for real-time smoke concentration monitoring and integration with compatible fire alarm control panels. It features an on-board microprocessor, in-situ electronic coding and local historical data storage for diagnostics and trend analysis.

Key features

• Addressable via in-situ coder (selectable addresses 1–324).
• Real-time sampling processed by embedded MCU; stores up to 144 historical records for curve tracing and analysis.
• Temperature, humidity and dust-accumulation drift compensation; sensor fault detection with fault reporting to the control panel.
• Non-polarity two-wire bus for simplified wiring and maintenance.
• Modular design with removable upper/lower covers and independent base for easy installation, commissioning and service.

Applications

• Suitable for restaurants, hotels, educational buildings, office buildings, computer rooms, communication rooms, libraries, archives and similar industrial or commercial facilities.
• Not recommended for locations with heavy dust, persistent water mist, steam or oil mist that produce smoke under normal conditions.

Technical specifications

• Standard: GB 4715-2005
• Wiring: Non-polarity two-wire bus
• Working current: Inspection <300uA; Alarm <1.5mA
• Weight: approx. 75 g
• Dimensions: Ø105 mm × H43 mm (with base)
• Installation height: ≤12 m
• Operating temperature: -10℃ to +55℃, RH ≤95% (40℃±2℃, without condensation)
• Coding: Electronic coding via in-situ coder; addresses 1–324 selectable
• Indicators: Monitoring — red indicator flashing; Alarm — red indicator steady on
• Coverage area: approx. 60 m² (refer to GB 50116-2013)

Installation & operation

• Mount on the supplied independent base for straightforward installation, testing and maintenance.
• Connect to a compatible two-wire fire alarm control system using non-polarity wiring.
• Check LED indication: flashing red in monitoring mode, steady red in alarm.