Communication and
Signalling Equipment

EX ResistTel Telephone
EX FernTel Telephone
EX Howl Call Telephone
Weatherproof Telephone ResistTel
Weatherproof Telephone FernTel
Weatherproof Telephone FernTel W
Weatherproof Phone Pillar
Weatherproof VOIP Telephone
Weatherproof ISDN Telephone
EX Telephone Signal Combination eFSK
EX Acoustic Telephone Call Signal
Telephone Protection Hood
Loudspeaker LS3000
EX Signalling Bell dGW 21
EX Sounder dEV21
EX Signalling Hooter HD22
Sirens F0, FI, FII, FIII
Pneumatic Horn PH1
Strobe Light Profiflash
EX Strobe Light dSLB20
EX Rotating Beacon dSLD21
Obstruction Light Skyline Alpha 1,2,3,4
Signalling Stack Light ML50
Mini Hooter with Warning Flash Light
EX Sounder Strobe Combination YL6
Signal Combination Duo LED
Ex Signalling Bell dGW 21        
The dGW21 signalling bell was designed to warn, call or signal in areas with explosive atmospheres in Group II. Protection type II 2G EEx de IIC T6 allows this signalling bell to be used without restriction in all Ex areas classified 1 and 2. The signalling bell produces a sound volume of approximately 105dB(A) at 1 meter distance. The emphasis of the ringing lies at approximately 1000 Hz, as a result of which the signal stands out clearly against low frequency ambient noises. The bell is available in the usual supply voltages. The version dRGW 21 emits signals in time with a connected telephone. Explosion protection is ensured by the airtight enclosure of the driver system and the terminal box. The enclosed chamber contains the electromagnetic driver of the system and for the dRGW 21, an addiional telephone relay. The enclosure is made completely of GRP (glass-fibre reinforced polyester) thus guaranteeing protection against corrosion. In addition, safety class II is realized and no equipotential bonding is necessary. The construction is very light and robust. All DC versions are equipped with an electronic contact breaker which considerably increases service life.
91 230 110 13 Housing Red - 230 VAC
Part NO. for BLACK Housing available on request
91 024 210 13 Housing Red - 24 VDC
Part No. for BLACK Housing available on request
PDF Catalog.