★has 3 colors:red,yellow,green
★Different color indicates different service area.
One color can work with 30 transmitters in max.
Totally,one light can work with 90 transmitters in max.
★Different color has different sound reminding.
★has separate output power supply.
★Installed over the patient rooms' door.
Working voltage : DC12V 500mA
Working current: <65mA
Volume Output: 85dB
Working environment: -40～80℃ Humidity: ≤80﹪