The seller shipped very quickly. I received the package and tested it. The XH-M609 module is assembled with high quality, everything works, the truth is that it does not accurately measure the voltage - it does not correspond to the readings of the multimeter somewhere by 0.7 - 1.0 volts, but it does its job. Thanks to the seller, I recommend it to everyone. Продавец очень быстро отгрузил. Посылку я получил и протестировал. Модуль XH-M609 собран качественно, всё работает, правда не точно мерит напряжение - не соответсвует показаниям мультиметра где-то на 0,7 - 1,0 вольта, но свою работу делает. Спасибо продавцу, всем рекомендую.
I made a photovoltaic system for lighting, and I use a lead-acid battery. I took this module precisely to protect it from excessive download contract and implicitly its failure. The battery has a maximum discharge voltage of 10.5v, my setting is 10.7v. He does his job successfully.