The Model AIS Stand-Alone Alarm Indication Station features an indication light, alarm horn and an alarm horn silence switch. Upon an alarm contact closure, the LED indicator will light and the horn will sound. The horn can be silenced through the alarm silence switch, while the visual indication will continue to be lit until the alarm condition has been corrected. FEATURES Long lasting, red LED indication Clear, distinct audible tone Horn silence switch Compact and attractive design Available in 24 VDC, 24 VAC, or 120 VAC Bright yellow panel face APPLICATIONS Refrigerant leak alarm indication Water level alarm indication Pressure alarm indication High/low temperature limits Gas leak indication Humidity limit alarm indication Vibration limit Voltage/current limit Any contact closure alarm application SPECIFICATIONS Power 24 VAC/DC, 120 VAC, 100 mA max Controlling device contact rating AIS-24D 24 VDC, 70 mA min AIS-24A 24 VAC, 90 mA min AIS-120A 120 VAC, 50 mA min Case Polystyrene, impact resistant, knock-outs Horn 80 db Mounting Four screws through back Dimensions 7.09"H x 4.33"W x 3.54"D (19.0 x 11.0 x 9.0 cm)