https://laliexpress.com/item/Wireless-pager-call-system-1-counter-number-led-display-40-buzzer/32668976694.html Wireless pager call system ( 1 counter number led display + 40 buzzer ): Cheap #led #display #voltmeter, Buy Quality led #pmma directly from China display #flash Suppliers: Wireless pager call system ( 1 counter number led display + 40 buzzer )
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- Brand Name: Ycall
- Model Number: K-4-C-USB+K-H3-BG
- Name: Wireless pager call system
- Button size: : 60*60*22mm
- Communication: : Wireless
- Transmitted Distance: : 300m in open area
- Working Frequency: : 433.92mhz
- Button Battery : 12V 23A
- Buzzer key: : Call;cancel;bill
- is_customized: : Yes
- Display : Show 3 group and 3-digit number at the same time
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