How to select a wireless sensor? When choosing off-the-shelf wireless sensors, it's essential to keep a few key factors in mind:
1. Interoperation: Locking manufacturers is a challenge in today's wireless sensor market. Most vendors install proprietary software on their wireless sensors and gateways, so they are only compatible with each other. However, some manufacturers make their wireless sensors usable with nearly any gateway device connected to the Internet. Asking the manufacturer is the best way to confirm that your wireless sensors are interoperable.
2. Range: WiFi, Bluetooth, and Zigbee are common protocols for short distance transmission (less than 300 feet). Remote wireless sensors typically use open radio frequencies, such as 900MHz, LoRa, or Sigfox. Most sensor manufacturers will tell you the work range of their sensors. Physical and environmental interference with signal transmission can shorten the sensor's range, therefore operating conditions must be considered. This is Glenair-440AA038-1020M.
3. Power supply: Wireless sensor can be powered by battery or hardwired. Battery-powered sensors are ideal for outdoor locations or indoor facilities where power is not readily available. Environmental conditions and data transfer intervals affect battery life, typically 1-10 years. To extend battery life, choose a wireless sensor with a built-in sleep mode.
4. Security: In order to follow best security practices, only wireless sensors need to be used to encrypt data in transit. If the wireless sensor has a factory default user name and password, be sure to alter the password before installing the sensor.
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