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In the event of an alarm, the glass pane (2) is broken first, then the pushbutton (3) is pressed hard. Thus the switch triggers the alarm. A locking mechanism holds the pressed manual call point. The pushbutton can be reset with the reset lever. This does not reset the alarm on the fire panel.


Operating voltage 20 – 26.5 V DC
Switch contact Type 366 (encapsulated), II 2 G EEx d II C
Maximum contact load 5 A / 250 V AC 0,25 A / 250 V DC
Cable entry 1x M16  x 1.5 tightening diameter 4‑8 mm, EEx e II Blind plug: 1x M16 x1.5 EEx e II
Housing material Polyester, glass fiber reinforced
Colors Red, RAL 3001
Dimensions (W x H x D) 136 x 138 x 88 mm
Weight Approx. 1800 g
Protection class as per EN 60529 IP 66
Permissible operating temperature -25 °C to +40 °C
Ex classification Eex emd IIC T6
Test certificate / PTB No. 97-37001
ATEX approval no. PTB 97 ATEX 3197
Operating voltage 16V DC to 28V DC
Cable duct PG11 screws (2x)
Connection terminals 0.2 mm to 1.5 mm
Housing material Plastic, PC
Color Red, RAL 3000
Dimensions (W x H x D) 134.4 x 134.4 x 43.5 mm
Weight Approx. 200 g
Protection class as per EN 60529 IP 54
Permissible operating temperature -25 °C to +60 °C
Permissible storage temperature -30 °C to +75 °C
Permissible relative humidity ≤100% at T≤34 °C
Ex classification EEx ib IIC T4
Input voltage Ui (V) ≤ 28
Input current li (mA) ≤ 100
Input power Pi (mW) ≤ 700
Internal inductivity Li (mH) 0
Internal capacity Ci (nF) 0



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