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singcall wireless calling system
Product categories: ChanJian pager
Sizes: 60mm X 60mm X18mm
Use frequency :433Mhz
Use Alkaline Battery: a 58mAh 12V
Call output: uV/m 20dB
Frequency deviation: 0.5 Mhz
Call distance (open) : 1500M
Decoding way: registration