Hikvision Standalone Smoke Detector(I/O) HF-S2

<table border="1" cellpadding="8" cellspacing="0">
  <tr>
    <th colspan="2">General</th>
  </tr>
  <tr>
    <td>Alarm current</td>
    <td>11.5 mA</td>
  </tr>
  <tr>
    <td>Battery capacity</td>
    <td>2900 mAh</td>
  </tr>
  <tr>
    <td>Executive standard</td>
    <td>EN14604:2005</td>
  </tr>
  <tr>
    <td>Standby current</td>
    <td>≤4 µA</td>
  </tr>
  <tr>
    <td>Alarm output</td>
    <td>1-ch IO output</td>
  </tr>
  <tr>
    <td>Working principle</td>
    <td>Photoelectric</td>
  </tr>
  <tr>
    <td>Alarm sound level</td>
    <td>
      ≥85 dB@3 m (for 1 minute)<br>
      ≥82 dB@3 m (more than 4 minutes)
    </td>
  </tr>
  <tr>
    <td>Power supply</td>
    <td>3 VDC</td>
  </tr>
  <tr>
    <td>Operation temperature</td>
    <td>-10 ℃ to 55 ℃ (14 °F to 131 °F)</td>
  </tr>
  <tr>
    <td>Operation humidity</td>
    <td>≤95% no condensing</td>
  </tr>
  <tr>
    <td>Weight</td>
    <td>
      Without packaging: 161.4 g<br>
      With packing: 250 g
    </td>
  </tr>
  <tr>
    <td>Dimension (W × H × D)</td>
    <td>
      With packaging: 123 mm × 121 mm × 73 mm<br>
      Without packing: φ 160 mm × H 50 mm
    </td>
  </tr>
  <tr>
    <td>Fault type</td>
    <td>Maze dirty, low battery</td>
  </tr>
</table>