PB135 Manual Call point "push button" type is a product certified for Atex areas 1-2 for gas and 21 to 22 for dust. It is dedicated Oil & Gas, chemical, petrochemical, pharmacy industries, marine and Offshore applications. It was developed for corrosive environments and hazardous areas . The apparatus is compatible with PLC, ESD, DCS systems via output 4-20 mA.There are two versions, push button and push button with key (provided). The visualisation functions, line detection, and lift flap protection, are optional. Body is in GRP, dyed in the mass and protected by a paint UV resistant.