NF C48-363/A1*NF EN 50136-3/A1:2021 Alarm systems - Alarm transmission systems and equipment - Part 3 : requirements for Receiving Centre Transceiver (RCT)
2021NF C48-363/A1*NF EN 50136-3/A1:2021 Alarm systems - Alarm transmission systems and equipment - Part 3 : requirements for Receiving Centre Transceiver (RCT)