Colour:dull black
Shell material:ABS
Cable gland:1-PG16(copper)
Explosive-proof grade:EX ib ⅡC T6 Gb
Ringing loudness:>75dB
IP rating:IP66
Double tone push button telephone set,used with HA-1 IS barrier.
Headphone line 1.5m there are special requirements needs to be indicated.