... national standard GA47-2002, Traffic Signal Controller.Main features and Working condition:1. Adopt touch screen, obvious stress and easy ... affecting the device work properly.6. Working temperature: -40°C to +80°C.7. Working voltage: AC 220V±15% 50HZ±2HZ8 ... . 52 circuits output, (44 circuits for driveway signal, 8 circuits for pedestrian signal) load capacity: ...