Features: With long service time, the normal life of this light can be 20 times the life of the U tube. No the trouble of heating problem, so this LED light can be used for a long time. It protects from circuit oxidation effectively, no worry that the heating problem may influence the circuit. Widely used for entry box, security engineering, shipping, electric power, traffic management and other special dangerous places. There is no sound when in flashing, to eliminate the trouble of noise that U tube has. Uses high power LED, which has high transparency, high brightness, and no color difference. Convenient for you to see the flashing light even at far when in darkness. Specification: Item Type: Warning light Material: ABS Color: As pictures shown Model: HS-05 Working Voltage: 220V, 24V, 12V (optional) Working Current: ≤100mA Flashing Frequency: 90 times / min Service Life: ≥100000 hours (standard power supply continuous operates) Light Mode: LED light Warning Light Power: 2W Scope of Application: Sentry box, security engineering, shipping, electric power, traffic management and other special dangerous places. Implementation of safety warning, alarm indication signal contact that can be equipped with various wired alarm host, security type walkie-talkie, and access control alarm monitoring. In case of emergency, will trigger the alarm with the use of them. Connection of Power Cord: Red wire is connected to the positive pole Black wire is connected to the negative pole Package List: 1 x Warning Light 4 x Screw 2 x Base 1 x Double-Sided Stickers