Emerson 16E09-101 Electronic Temperature Control For Refrigeration Or Heating Applications. Alarm output With Selectable Delay, (SPDT) Range -40 To 220F And Differential From 1F To 30F. Requires NO Additional Common Wire On 2.5A Or Higher Applications.White Rodgers 16E09 101 Superior temperature control and accuracy for both refrigeration and heating applications Features: Multiple input voltages (24 120 208 240 volts) with no common wire required on electrical loads greater than 2. 5 amps uninterrupted Reduces inventory replaces most competitive mechanical and electronic refrigeration controls Electronic temperature accuracy digital display Alarm output (with selectable delay up to 99 minutes)