Dobrý den Mám pochybnosti o správnosti vámi uváděných parametrú, podle vaší specifikace přístroj vyžaduje baterii 9V, ale všude jinde se udává pro stejný hlásič Bentech C999 baterie 3xAA 1,5 V, tedy celkově poloviční napětí 4,5V, to je dost podstatný rozdíl Který údaj je správný? Děkuji, Janovský
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