| Technical Details | |
| Communication | ZigBee |
| Transmission Frequency | 2.4 GHz |
| Working Voltage | DC 3V (CR123A battery) |
| Undervoltage Alarm | Supported |
| Working Temperature | -10℃ to +55℃ |
| Detector Type | Independent Smoke Detector |
| Alarm Sound Pressure | ≥80 dB (3 m in front of the smoke sensor) |
| Installation Positioning | Ceiling |
| Battery Life | More than three years (20 times/day) |
| Dimensions | Φ 90 x 37 mm |
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Datasheet 904M-S3.pdfDownload
