Detex Exit Door Alarm 9V Battery Mortise Horn

detect ca x 500 grey surface mounted exit alarm piezo horn detects battery power door or wall mount exit alarm 2.10 standalone surface mount door alarm exit alarm function includes cover cam lock key number eleven two minus three thirty seconds x seven minus twenty three thirty seconds x two minus three eighths unit dimension one hundred decibel alarm nine volts battery power source three year warranty three year warranty click the link in the description to get this product today at the best price