Put one of these temperature indicators on each breaker in your box to alert you when operating temperatures have reached a dangerous level.A few dollars per house can save you thousands by catching a potential major disaster before it happens. These indicators turn black once a certain critical temperature has been reached and are non-reversible so that you can clearly see when something isn't right. Overheating can signal wiring or load problems that can cause equipment damage or even fire.- Indicator turns black once a critical operating temperature has been reached so you can call an electrician to diagnose the reason for overhearing.
- Non-reversible, indicator will stay black once critical temperature is reached. (Critical temp = 130°F) - Most important on main breakers. Recommended for every breaker in the box.- Affordable precaution measure against expensive equipment damage and fire.- Outside diameter is 5/16"*Indicators cannot be shipped via UPS during the summer months to avoid unwanted activation.*