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1 inquiries about smartphone battery
Need an alarm on smartphone (GSM module) for pigsty when it gets too warm. It should work during power failure (battery), call 4 telephone numbers, have a currentless switching contact and a 12v switching input with NC and NO. There's a high - priced local manufacturer, so there's an open market. Maybe can sell some.
- United States
- IP : 162.211.105.**
- 2025-06-11 01:00:05
