Detailed Product DescriptionDetaiLED Product Description:
Features:
-Supporting up to 32 apartments. Suitable for lower building.
- Call conversation function
- Door O
Pen (common gate) function
- Electronic Ding-Dong ring tone and confidential conversation
- UPS switching while power failure (maintain normal working up to 12 hours)
- Main switch connection and 3-wired connecting to an individual indoor unit