Features 1、WEAR RESISTANT MATERIAL: The ultra high performance backup alarm feature a waterproof housing of excellent nylon material and embedded electronics, with stainless steel power supply and ground connection terminals. With high reliability, impeccable wear resistance, scratch resistance, dust resistance, non fading, impact resistance and erosion resistance. Can work in a variety of temperature environments 2、EASY INSTALLATION: Connect the wire of the positive screw terminal to the power cord of the reverse switch installed on the reverse light or dashboard, and then ground the wire(negative wire). When the wire is reversed or wrong, can play a protective role. Reverse polarity protect the reverse horn and activate when the reverse light is on 3、APPLICABLE SCENARIO: Electric disc horn is universal for 12V heavy duty vehicles and commercial use, best suited for trucks, cars, excavators, construction machinery, special vehicles, parking lots and container vehicles of all kinds for large vehicles. Universal mounting brackets with slotted holes can be installed in multiple places on the vehicle 4、FUNCTIONS AND EFFECTS: The car warning horn can emit a strong beep of 105 decibels, when you reverse, no one will ignore this beep. Help to immediately attract the attention of other drivers and pedestrians at a distance, preventing accidents and reducing costs 5、APPLICABLE MODEL: Electric disc type horn can be used for Lida, for XILIN, for EP, for HELI, for HANGCHA, etc. The sound is clear, the electric speaker volume is large, and the warning signal can be clearly conveyed Specification Item Type: Electric Disc Horn Material: Metal Operating Voltage: 12V Working Current: 3A Volume: 105dB Applicable Models: For Lida, for XILIN, for EP, for HELI, for HANGCHA, etc. Use: Electric truck, electric forklift electric horn Package List 1 x Horn