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SPECIFICATION FOR COUNTDOWNFeature/benefits The signal is specially to increase the safety of car driver, by showing number of seconds left to change signals from red light to green light or from green signal to red signal to assist drivers to determine if he/she should driving or should slow down to wait for light changed. When Green Vehicle Signal is on, the Digits will be shown with count down digits, to show the number of seconds left before the Green Light is changed to be Red. When Red Vehicle Signal is on, the Red Digits will be shown with count down digits, to show the number of seconds the car driver needs to wait before the Red light is changed into Green. - Model: countdown - Lamp size: - 520mm*520mm; 600mm*800mm; 850mm*590mm;720mm*920mm( or accord with customers need)- Material: iron - Display signal: bicolorRED & GREEN - UV stabled scratch resistant shell. - Power Factor greater than 0.95 - Turn on/Turn off Time:75msec - Moisture and Dust Ingress: Meet IP 65;IP 54 - Long life: up to 10 times longer than incandescent. - Traffic lights parameterlight WavelengthRED624±4nmGREEN505±2nm The Product accord with Chinese standard GB14887-2003& GB14886-2006 Delivery time: sample within 10 working days after payment. Payment: 100% T/T in advance Validity: within 3 months from now Warranty: one year warranty for in-house factory repair.