TATTLETALE® annunciators and Magnetic Switches are the nerve centers that translate SWICHGAGE® contact operations into decisions and operate the alarm or shutdown device. They are the electrical load carryingdevices for the alarm or shutdown device. TATTLETALE® annunciators indicate which monitored function failed leading to the alarm or shutdown whereas magnetic switches do not. Magnetic switches operate basically as a latching relay.
Magnetic switches and TATTLETALE® annunciators described in this bulletin are electrically tripped relay type devices. Models are available to operate from battery power, 120 VAC, conventional magnetos and capacitor discharge type ignitions. Energized to run models allow CLOSED LOOP circuitry. Others draw momentary power to trip. Configurations are available for contact make or contact break to cause shutdown. Some models have both make and break contacts. All models have a weather resistant case with screw terminals for ease of customer hookup. Manually reset models have a face mounted reset push button which also serves as a fault indicator in the TATTLETALE® version. In this application, one or more TATTLETALE®/magnetic switches are used to advise operating personnel which monitored function caused shutdown. Only the TATTLETALE® connected to that function sensor trips causing the reset push button to pop out.
Electrically reset models perform the same functions as the manually reset models and are reset by cycling the power supply off and then on. Time delay models use reliable solid state timing circuits to lockout operated switch contacts for start-up and/or to allow operation of alarms before shutdown occurs. Specific models allow application of power to a shutdown circuit andautomatic disconnect of power after a given time delay.

Display Name: Murphy MS2110
Item Code: Murphy MS2110 Multi purpos TATTLETALE 12-24 Volt operation