Next Product ECU-HS Extinguishant hold off switch Please login to see your pricing Login SKU: ECU-HS Category: Extinguishant Ancillaries Description Shrouded "Hold Off" push button for use with Sigma extinguishant systems Downloads ECU-HS Data Sheet.pdf Related products Quick View Quick View Extinguishant Ancillaries, Signs, Warning Signs and LabelsWS-GEN-FA-EVAC Read more Warning Sign (generic) "Fire Alarm/Evacuate Area" Quick View Quick View Extinguishant Ancillaries, Signs, Warning Signs and LabelsECU-WS-ESI Read more RS485 Warning Signs: "EXTINGUISHING SYSTEM INOPERATIVE" Quick View Quick View Extinguishant Ancillaries, Signs, Warning Signs and LabelsECU-WS-ESI-WP Read more Weatherproof Warning Sign (RS485) "Extinguishing System Inoperative" Quick View Quick View Extinguishant Ancillaries, Signs, Warning Signs and LabelsWS-GEN-ESI-WP Read more Weatherproof Sign (generic) "Extinguishing System Inoperative"