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L1-09D.09 – NFPA 731 Requirements

L1-09D.09 – NFPA 731 Requirements Each transmitter shall be individually identified at the receiver/control unit. The battery shall be capable of operating the low-powered radio transmitter for not less than 1 year. Maximum allowable delay from activation of an...

L1-09D.08 – Limited Battery Life

L1-09D.08 – Limited Battery Life Typical lifespan for wireless batteries is 1-5 years. Will need additional service calls to replace batteries Lithium batteries may add to...

L1-09D.07 – Spread Spectrum

L1-09D.07 – Spread Spectrum Frequency of the transmitted signal is deliberately varied to provide greater bandwidth and also reduces the impact of...

L1-09D.06 – How Do Systems Vary?

L1-09D.06 – How Do Systems Vary? Systems use a variety of antennas to focus the signals and most use either the 900 Mhz or 2.4 Ghz frequencies to communicate Because both of these frequency ranges are used by other devices, some manufacturers use spread spectrum...

L1-09D.05 – RFI- Radio Frequency Interference

L1-09D.05 – RFI- Radio Frequency Interference Signals from amateur radios, CBs, and radio and television stations Can interfere with data transmissions Can Block Radio signals Interference...