The fire alarm sounder radio channel "Orpheus-PRO" is designed to broadcast speech information about actions aimed at ensuring safety in case of fire and other emergencies as part of warning systems of the third, fourth or fifth type according to SP 3.13130.2009. The device functions as a part of the Strelets-Integral intra-object system.
The device can be switched on in the mode of playback or broadcasting of alarm signals manually or automatically. Radio channel is used for information exchange with the control panel.
The operating frequency of the device is in the range of 864.0-865.0; 868.0-868.2 MHz; 868.7 - 869.2 MHz. The main and backup power supply sources of the device are lithium batteries with nominal operating voltage of 3.0 V and capacity of 1.2 Ah (type - CR123A).
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