Fire alarm system · Fire alarm system – CCC new (GB 2024)
JTW-ZD-A820Addressable heat detector (fixed + rate-of-rise) (CCC 2024)
Addressable point-type heat detector supporting A2R and BR types, alarming on a fixed temperature threshold and on the rate of temperature rise; complies with GB 4716-2024.
- Fully electronic coding; the address is rewritten on site with a programmer
- The microprocessor samples in real time and tracks the on-site temperature curve
- Temperature compensation and sensor failure detection (fault reported to the panel, yellow LED on)
Price on request
Addressable point-type heat detector supporting A2R and BR types, alarming on a fixed temperature threshold and on the rate of temperature rise; complies with GB 4716-2024.
Key features
- Fully electronic coding; the address is rewritten on site with a programmer.
- The microprocessor samples in real time and tracks the on-site temperature curve.
- Temperature compensation and sensor failure detection (fault reported to the panel, yellow LED on).
- Epoxy-encapsulated sensor with good insulation and high reliability.
- Supports A2R and BR types; fixed-temperature and rate-of-rise heat alarm.
- 2-wire non-polarized connection; unique ID code; independent mounting base.
Technical specifications JTW-ZD-A820
| Model | JTW-ZD-A820 |
|---|---|
| Operating temperature | Indoor, -40 °C ÷ +50 °C (A2R), -40 °C ÷ +65 °C (BR) |
| Relative humidity | ≤95% (non-condensing at 40 °C±2 °C) |
| Operating voltage | Bus 24VDC |
| Operating current | Monitoring: <0.3mA, alarm: <1.5mA |
| Indicator | Status LED: flashes during patrol, steady on in alarm |
| Heat sensor type | A2R (default, response temperature: 54 °C ÷ 70 °C); BR (response temperature: 69 °C ÷ 85 °C) |
| Wiring method | 2-wire |
| Dimensions | 105×H43mm |
| Mounting base | DZ-A816 |
| Coding type | Electronic coding |
| Protection area | Radius: 3.6m; area: 20m² |
| Standards | GB 4716-2024 |
| Brand | Sanjiang |
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