This Harmony XB5, push-to-test pilot light red is supplied with 24V AC/DC. Under normal conditions, the push-to-test pilot light is providing a best-in-class illumination to service your panel signalisation functions. During maintenance, one push on the head is enough to test the lamp and to confirm its good health. It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66 / IP67 / IP69 / IP69K, making it ideal for operation in harsh environments. Its wide range of operating temperatures from -40°C to 70°C allows versatility in usage of product.