Giant Kone elevator button KDS50 kds300 button A4J16467 round KM853343H04

The uplink defaults to dual plug-ins (normally dual plug-ins are used). There are a few single plug-ins, but the price difference cannot be used universally.

Downlink single plug-in. The alarm bell of this button is divided into single plug-in and double plug-in, which cannot be used universally. If you need an alarm, please purchase it accordingly.