Type: One Way Function: Speed Limit Voltage: 12/24V Frequency (MHz): 20-50HZ Control Distance: 10 -100 km / h Place of Origin: Guangdong, China (Mainland) Brand Name: N-EC Warranty: 1 Years Speed range: 10 to 120km/h Speed limit deviation: ± 1km/h Operating voltage range: 9-28V Low temperature resistance: -40 Temperature resistance: + 85 Rated power consumption: 5W Applicable environment temperature: - 35 to 50 working voltage of product range: 9-28V Installation: easy installation