ZE WK 971 (WK 975) Standard - second ringing tone set, bell, industri

Additional electromechanical signalling device for analogue telephone operation. Very loud signalling due to the electromechanical system. WK 975 is the name of the DC voltage unit.

Attention: DC alarm clocks and 230V alarm clocks are not suitable for standard telephone connections.

Performance characteristics
- weatherproof
- two-tone sound
- protected against polarity reversal
- separate connection chamber
- for outdoor and indoor use
- Plastic housing, GV-reinforced
- surface mounting
- CE-compliant

Technical data

Operating voltages:
WK 971 Standard: AC voltage 45-75 V / 25-50 Hz (article number: 7057)
WK 971 230V: AC voltage 230 V/ 50 Hz (article number: 7058)
WK 975: DC voltage 16 . . 60V

Colour: pebble grey similar to RAL 7032

Impedance: > 8 kOhm at 25 Hz operating voltage

Volume: >105 dB (A), measured in small reverberation chamber

Protection class: IP 43

The WK 971 is to be mounted vertically and can be a cable (Ø min. 4,5 mm) with two wires to the TAE-terminals to be switched on. When using older telephones with pulse dialling (IWV), the WK 971 standard must be connected to Lb and W.

Note
For small telephone systems that do not provide enough energy, it may be necessary to use the following items: WK 971 (230V) incl. power connection relay (SAR), manufacturer number: 1-509.15.1.11.

SKU:	7057
GTIN:	4027639006230
Category:	Phone Ring Signaler
Manufacturers:
Shipping weight:	1,40 kg
Item weight:	1,20 kg
SKU:	1-509.15.1.07

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