Size: 20, Sensor: With Photoelectric Sensor, AC Adapter: With AC Adapter, Option: D + P
Size: 20, Sensor: With Photoelectric Sensor, AC Adapter: With AC Adapter, Option: D + P + S
Size: 20, Sensor: S (With Photoelectric Sensor), AC Adapter: A (With AC Adapter), Option: DP (D + P)