The PA-SP (Panic Attack Button, Single Push) and PA-DP (Panic Attack Button, Double Push) are compatible with all HKC wired and hybrid panels. They both have a latching function that is easy to engage. Current Consumption: nil Weight: 56g (PA-SP) 58g (PA-DP) Size: 86 x 58 x 32mm (PA-SP & PA-DP) Temperature: -10 to +40°C BS 8243 & PD6662 EN 50131-1 Grade 2 Class II