Tattletale® annunciators are electrically tripped relay type devices that indicate which monitored function failed leading to the alarm or shutdown.

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Magnetic switches operate basically as a latching relay, and are available for use with engines or electric motors. For distributor ignition engines, the magnetic switch opens the distributor coil circuit to cause shutdown. For magneto or CD ignitions the magnetic switch grounds the ignition output. Some models can also trip fuel valves instead of or in addition to grounding the ignition. Diesel engines are shut down by either closing off the fuel or air supply. Magnetic switches can make or break circuits for these engines.

Various circuits, time delays, and contact configurations are available to match the power source and mode of operation required for alarm only, alarm before shutdown or shutdown only. For electric motor applications, various magnetic switches are available to operate the motor starter, holding coil directly or in conjunction with the appropriate Murphy Transformer-Relay assembly.

If you wish to continue with a credit card purchase, please note the following instructions:

When you are prepared to purchase an item, do not click the "buy" button on this specific page any page that shows multiple items and multiple "buy" buttons, as the item will not be added to your shopping cart from any page at this level. To successfully add an item to your shopping cart, you must drill down to the next level where a single item is shown on a page and click the "buy" button that appears on that page. You will recognize this final level by the larger product image and a more detailed product description.

After clicking the "buy" button on this product page, a new shopping cart page will automatically open and you will see your chosen item in the shopping cart.

ST Series Selectronic® Tattletale® Remote Alarm Annunciators provide an audio and visual alarm over a wide range of applications. They are inexpensive and easy to install and operate. When an alarm sensor trips, the LED flashes and, if equipped, the Mini-Siren® sounds. At the same time an output circuit is activated which allows you to connect an external relay to operate an alarm or shutdown device.

ST Series annunciators can be used on work boats, oil fields, construction sites and generator sets, as well as municipal and agricultural settings. These unique alarm panels have a wide range and can be grouped many ways. MurCal stocks each of the models in the -LM "Less Mount" configuration. This allows you to choose between a gimbal mount and a flange mount to best accommodate your needs.

If you wish to continue with a credit card purchase, please note the following instructions:

When you are prepared to purchase an item, do not click the "buy" button on this specific page any page that shows multiple items and multiple "buy" buttons, as the item will not be added to your shopping cart from any page at this level. To successfully add an item to your shopping cart, you must drill down to the next level where a single item is shown on a page and click the "buy" button that appears on that page. You will recognize this final level by the larger product image and a more detailed product description.

After clicking the "buy" button on this product page, a new shopping cart page will automatically open and you will see your chosen item in the shopping cart.

FW Murphy developed the dust boot and the weather cap to help keep dirt and dust out of your instrument's push button. The in-line fuse assembly is a replacement part for the one supplied with your new unit.

If you wish to continue with a credit card purchase, please note the following instructions:

When you are prepared to purchase an item, do not click the "buy" button on this specific page any page that shows multiple items and multiple "buy" buttons, as the item will not be added to your shopping cart from any page at this level. To successfully add an item to your shopping cart, you must drill down to the next level where a single item is shown on a page and click the "buy" button that appears on that page. You will recognize this final level by the larger product image and a more detailed product description.

After clicking the "buy" button on this product page, a new shopping cart page will automatically open and you will see your chosen item in the shopping cart.

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