Without any external power supply or complex equipment, it can be installed in blast furnace areas, in tunnel building or mining areas, offshore, on an oil rig, in a deep sea vessel, or in any place that is not (yet) connected to any energy source.
This dynamic telephony represents an ideal opportunity for connection.
The ATEX howl call telephone is a battery-free and network-independent telephone with highly efficient dynamic transmitter and receiver capsules offering remote communication without power supply.
I M1 Ex ia I Ma
Ex II 1G Ex ia IIC T6 Ga
Certificate: EU-Type Examination Certificate
Weight 5069: Approx. 1 kg
Weight 5220: Approx. 2,5 kg
Maximum output voltage: Uo /- 10 V
Maximum output current: Io /- 155 mA
Maximum output power: Po 390 mW
Ringing frequency: f ~ 1540 Hz
Talking frequency: f ≤ 3000 Hz
Talking voltage: U ≤ 2 Vss
Talking current: I ≤ 10 mA
Mode of operation: 100 % duty cycle
Housing: Polyamide (Black)
Operating temperature: -20ºC to 40ºC
Ingress protection: IP54
Connection: 2-wire blue power cable
|Certified for use in:||