McDonnell & Miller has introduced its new GuardDog® RB-24E Low Water Cut-Off

Morton Grove, IL – November 10, 2008
McDonnell & Miller has introduced its new GuardDog® RB-24E Low Water Cut-Off for residential hot water boilers. The 24-volt RB-24E offers several new features:

• Brass threads provide a metal-to-metal seal that ensures a leak-free installation.
• Integrated wrench flats enable secure installation without damage to the housing.
• McDonnell & Miller’s patented self-cleaning probe minimizes scale build-up and extends the recommended cleaning interval to 5 years.
• “Plug & Play” wiring harnesses are available for most residential gas-burning boilers.

Other significant enhancements have been made to the RB-24E including:

• A Push-to-Test Button allows testing of the low water cut-off circuitry for proper operation without draining the system.
• Automotive grade components provide years of reliable protection against low water conditions.
• Designed, built and tested at ITT’s production facility in Morton Grove, IL USA.

For more information on the RB-24E low water cut-off, contact your local McDonnell & Miller Representative or visit

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ITT manufactures McDonnell & Miller brand boiler controls, flow switches, liquid level controls and steam specialty products for residential, commercial and industrial applications.

For more information visit, or call 847/966-3700; fax 847/966-9052.