The HY-2301 smoke detector is an advanced solution for addressable fire alarm systems, designed with polarity-free two-wire technology to simplify installation and reduce wiring time. Thanks to the intelligent labyrinth contamination compensation system, it automatically adjusts the alarm threshold, improving reliability and maintenance. Equipped with optical smoke detection , it supports precise identification of the alarm point and is ideal for homes, hotels, offices, archives, and industrial environments. The acid- and corrosion-resistant structure ensures a long life, while compliance with the EN54-7 standard ensures high fire safety performance. Dahua
HY-2301 | SMOKE DETECTOR

The Dahua HY-2301 smoke detector is designed to ensure high reliability in fire protection systems thanks to its polarity-free two-wire technology , which simplifies installation and reduces wiring time. Equipped with optical smoke detection and an intelligent contamination compensation algorithm, it automatically adjusts the alarm threshold for improved performance and maintenance. Its acid- and corrosion-resistant structure ensures a long life, while its precise alarm identification function makes it ideal for hotels, offices, warehouses, archives, and industrial environments. Compliant with the EN54-7 standard, it offers advanced security and maximum operational stability.
Main specifications:
- 2-wire, polarity-free technology for quick installation and simplified wiring
- Intelligent contamination compensation for greater accuracy and less maintenance
- Optical smoke detection with high sensitivity and immediate response
- Addressable alarm identification to quickly locate the fire point
- Acid and corrosion resistant materials for long-lasting durability
- EN54-7 compliant for professional fire safety applications
- Ceiling mount ideal for residential, commercial and industrial environments
Further details
Technical data sheet
| HY-2301 | |
| Technical Specification | |
| Surveillance Area | For installation heights below 4 m, the coverage area is 150 m² For installation heights between 4 m and 12 m, the coverage area is 80 m² |
| Remote Indicator | Support |
| Working Principle | Smoke detection |
| Alarm Mode | Indicator light alarm |
| Operating Voltage | DC16-28V |
| Operating Current | Static current: ≤350μA Alarm current: ≤450μA |
| Operating Temperature | –10°C to +50°C (14°F to 122°F) |
| Operating Humidity | ≤ 95% RH (no condensation) |
| Dimensions (with base) | Φ100mm × 46.3mm (Φ3.94" × 1.82") |
| Weight (with base) | 96 g (0.21 lb) |
| Installation | Ceiling Mount |
| Compliance Standard | EN 54-7 |


