The DMN798 is an anti-tamper, breakable seal for manual call points. It allows the manual call point cover to be "locked" to the manual call point, forcing a 3-stage operation and eliminating accidental or tamper alarms. The DMN798 can be easily broken without the need for special tools. Compatibility: DMN700 Series,? DM2010 Series,? DMN900 Series,? ZP7 Series,? EA7 Series,? KAL455 Series.