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    Watchlog Wireless FAQ

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    Q: How many devices can operate on one radio channel?

    A: Many devices can operate on the same radio channel depending on the sample rate of the transmitter modules present in the system. The radio channel is capable of supporting up to 200 data packets per second.

    Q: What Frequency does the system operate on?

    A: Licence free world wide 2.4GHz, although this frequency is used by other equipment, the Watchlog Wireless range has been tested with Bluetooth, Zigbee & WiFi devices without conflicts.

    Q: What is the communication protocol?

    A: Proprietary protocol based on a 802.15.4 chip. This allows the Watchlog Wireless range to co-exist with Bluetooth, Zigbee & WiFi devices without conflicts.

    Q: What inputs are available to the Watchlog Wireless system?

    A: The Watchlog Wireless system supports Strain, Current, Voltage, Temperature, Pulse and Potentiometer sensors.

    Q: What are the sampling rates of the transmitter modules?

    A: The Watchlog Wireless standard transmitter modules sample from 0-200 updates/sec.

    Q: How reliable are the readings?

    A: Due to the digital nature of the Watchlog Wireless system, when a reading is received by any device it is guaranteed not have been distorted over the RF transmission.

    Q: How are transmitters powered

    A: 3V (2xAA batteries) for the standard transmitter modules and the other modules in the range take 3V (2xD cell batteries or 9-36 V).

    Q: What battery life can I expect?

    A: For our standard pressure transmitter using a pair of AA L91 batteries and the transmitter sending a 10ms sample every second, 24 hours a day you will be looking at approximately 19 days battery life. For the same settings using our Watchlog Wireless Plus transmitter with a pair of D cell LR20 batteries you will be looking at approximately 2 months.

    For our standard temperature transmitter using a pair of AA L91 batteries and the transmitter sending a 10ms sample every second, 24 hours a day you will be looking at approximately 3 months battery life. For the same settings using our Watchlog Wireless Plus transmitter with a pair of D cell LR20 batteries you will be looking at approximately 10 months.

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