1. Type: one way 2.function : speed limit 3. voltage : 12/24 V 4. Frequency(MHZ); 20-50h 5. Contron distance : 10-100km/h 6. Place of origin : Guangdong ,China 7.Brand name : N-EC 8. model number : NXS-3 9. Warrnty:1years 10.operating voltage range : 9-28 v 11. low temperature resistance : -40 12. temperature resistance : +85 13. rated power consumption : 5W 14. resistance of pulse voltage : 12v - 24v