The reed sensor’s wide operating temperature ensures reliable operation at extreme temperatures. This is not the case with some solid state sensors that not only require power 100% of the time, but also are derated at higher temperatures. The reed sensor does not draw any power until energized. Also, reed sensors have the ability to switch billions of consistent fault-free operations over their lifetime. To ensure fault-free operation, Standex Electronics tests each sensor dynamically for thousands of operations on every reed sensor that is sent to the customer. This dynamic contact resistance test has the ability to detect potential early failures which are eliminated from shipment.