Spruce Sensor Range

The Spruce Sensors’ range can vary a lot depending on walls, obstructions and other radio interference.  With multiple walls or depending on the composition of your exterior walls, range can be as little as 50 feet or with a clear line of sight over 150 feet. Routers and other electronic devices also emit interference that can drastically reduce signal strength or block the signal entirely.

Spruce Sensor Signal path with obstructions
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To optimize range, orient the Spruce logo on the top side of the sensor to point toward the Spruce Controller or repeater device.  Also avoid placing the sensor behind flower bed walls or directly behind tree trunks.  In general look for a location with as few obstructions as possible.

Refer to Wireless Range 101 and Sensor Network for additional information or optimizing range and range extenders.

The Spruce App Places page will display the last received decibel reading from the sensor and indicate if the range is borderline with an orange ! indicator next to the value .  In general, a decibel reading below -80 dB will cause intermittent reporting or loss of connection.  The general guideline for connection reliability is:

  • Reliable connection: -20 to -75dB
  • Intermittent connection: -76dB to -82dB
  • Lost connection: -83dB and lower
Spruce Sensor Weak Signal Strength

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