Beijing GYG Industry Co., Ltd.
BEIJING GYG INDUSTRY CO., LTD
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12V/24VDC power supply, 5-way communication for elevator;
4-core Bus communication, LED module display;
Miss call reminder;
Emergency broadcasting;
| System | Product Series | Master Unit Type | Main Unit Type | Slave Unit Type | Extension Unit Type | Remark |
| Single Lift 3-way Communication | BH123 | / | BH123/M | BH123/Z | / | |
| BH127 | / | BH127/M | BH127/Z | / | ||
| Single Lift 5-way Communication | BH211 | / | BH211/M | BH211/Z | BH211/F | |
| BH221 | / | BH221/M | BH221/Z | BH211/F | Thin Cover | |
| Group Control 5-way Communication | BH202 | BH202/K | BH202/M | BH211/Z | BH211/F | |
| KH202 | KH202/K | KH202/M | BH211/Z | BH211/F | MP with phone calling function | |
| KH202/MP | ||||||
| BH231 | BH231/K | BH231/M | BH231/Z | BH231/F |