Fire detector smoke radio channel "Astra-421" RK is designed to detect fires accompanied by smoke in enclosed spaces and transmitting notices over the radio channel 433 MHz to the radio receiver systems Astra-RI-M and Security Hub. The range of the radio channel is 300 m.
Power supply from 2 CR123 batteries, main and backup (included). Measurement and transmission over the radio channel dust/smoke smoke chamber, residual battery capacity, ambient air temperature.
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