Power cut alarm 380V three-phase deficiency phase power outage high temperature remote 4g mobile phone to remind breeding fish pond temperature and humidity-Taobao
3 3-phase 3-wire power-off, 2 m 3-phase 3-wire power-off, 5 m 3-phase 3-wire power-off, 10 m 3-phase 3-wire power-off, temperature and humidity 20 m 3-phase 3-wire power-off temperature and humidity
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