BST Elevator Intercom System BH211 Serie 5 in 1 Whole Kit SELCOM Each time of speeding up

Each time of speeding up of elevator is to race against life

and is divided into standard protocol and customized protocol

Upward control: permanent- magnet synchronous

Floor: Wear-resistant PVC marbling floor

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BST Elevator Intercom System BH211 Serie 5 in 1 Whole Kit SELCOM Each time of speeding upInput voltage: 12V DC 24VDC 10% Standby current: 25mA Connection Cable: 2 Lines Maximum audio current: 300mA Frequency: 300 4000Hz Ringtone level: 70dB Car phone volume: 70dB Call distance: 3500m Connecting wire: 0. 75mm Working temperature: 1055 Supports up to 199 office address codes Missed call storage callback function *Please note before placing an order: This product contains lithium batteries, which are air transport controlled items and cannot