ATEX dST2 Explosion-proof Telephone ExSafeTel


ATEX Approved Explosion-prrof telephone for the Petrochem industries dST1, dST2 - IP66, 90dB, -25 to +50deg C (T5), -25 to +40deg C (T6), EX, CE (Click for Details for more).



  • explosion-proof telephone for universal applications in the industry (onshore) and offshore
  • certified for gas and dust explosion endangered areas (G and D)
  • resistent against high temperature differences, humidity, seawater acids, alkalis etc.
  • very robust impact protected telephone housing (impact protection IK 09)
  • freely programmable, well readable alphanumerical display
  • designed for use with gloves, V4A stainless steel keypad - 21 keys
  • model without keypad available as emergency telephone
  • comfort telephone functions as in office communication
  • handsfree operation
  • visual call signalling on display
  • ringing sound pressure level approx. 90 dB (A) in 1 m
  • 10 ringing tone melodies selectable
  • listening by loudspeaker: max. 68 dB (A) in 1 m
  • receiver volume adjustable in 7 steps from 0 dB to +12 dB
  • menu in german/english/french/spanish
  • telephone directory - max. 50 entries (names and numbers)
  • locking option via PIN-code

Technical Data:

General data
dST1 dST2
Housing, Colour
glassfibre reinforced polyester, black RAL 9005
2-line alphanumerical display with
pictograms/visible area 78 x 26 mm
metal keypad with ice protection/
21 keys with ABC lettering for name entries
~ 5,5 kg
integrated, adjustable stabilizer bracket
Handset cord stainless steel armoured handset courd V4A
Receiver inset
dynamic receiver with leakage field spool for
inductive coupling of hearing aids
Mouth piece
electret microphone
Noise suppression mouth
> 3 dB due to integrated mouthpiece horn
Terminal data
DMT 03 ATEX E 034
Protection class
IP 66 (EN 60529)
Impact protection
IK 09 (EN 50102)
Line voltage 24 - 66 V DC
Line current
0,015 - 0,10 A DC
Ringing alternating current
24 - 90 V AC (at 21 ... 54 Hz ringing frequency)
30 - 90 V AC (at 16,6 ... 54 Hz ringing frequency)
Ringing impedance
> 6,0 KO at 25 Hz and 24 ... 90 V AC
> 4,0 KO at 50 Hz and 24 ... 90 V AC
Inquiry key
flash function adjustable from 40 ms - 399 ms
Dialling procedurePD-DTMF operation to be set in the menu
DTMF operation according to CCITT recommendation Q.23PD operation - pulse/pause ratio can be set to 1,5:1 or 2:1 in the menu
connection for external secondary sounder
up to 4 mm2 rigid, up to 2,5 mm2 flexible
Cable gland (free)
1 x M20x1,5; 2 x blind plug M20x1,5
Operating temperature
-25°C to +40°C (T6)
-25°C to +60°C (T5)
Storage temperature
-25°C to +70°C

Ordering Information:

TypeOrder No.
dST1410 010 000ExSafeTel - explosion proof telephone
dST2 410 020 000
ExSafeTel - explosion proof emergency telephone without
keypad and display (for central operation)

Code: AS-410-020-000 Enquire