Temperature Alarm Temp Range 39 Degrees F Width 4-1/2 In. Height 3-1/4 In. Depth 1 In. Indication Audible 50mA @ 12VDC Contact Rating Features High and Low-set Points Will Activate Virtually Any Alarm Panel Dialer or Wireless Alarm. Separate High and Low Temperature Outputs. Sleek 1 in (2.54 Cm) Profile. Gold Plated Normally Open (n.o.) Dry Contacts. No Power Required to Operate. Includes Mounting Equipment Instructions