Secure yourself, your homes and your work places with our Observation & Security products that are designed to achieve the security levels you desire. These are easy to install, use and feature high quality design and construction for durability and performance. FeaturesAccurate 24 hour digital time clock displays hours and minutes synced to AC powerUser programmable 24 hour, 128 event timer in two separate schedulesProgrammable day of week on/off featureProgrammable single, double or triple alert tone output (select bong or buzzer)Three contact closure controlled sounds:Emergency siren (yelp) soundTemporal (slow whoop) evacuation signalDoorbell (chime) sound600 Ohm line level audio output with volume controlNon-volatile memory with four day clock backupTwo sets of DPDT relay contacts for muting paging or background music during alert tones or timed relay eventsSwitchable 50/60 Hz operationSpecificationsWeight: 1.45 lbs- SKU: JLRS33725