After out of range notification from any FilesThruTheAir™ Wi-Fi sensor device connected to same wireless network, red LED lights of EL-WiFi-ALERT flash through translucent rear molding and alarm sounds. This standalone monitoring accessory consists of audible alarm with built-in speaker (SPL 100 dBA @ 1 m) and can be attached to wall or flat surface. Other features include Wi-Fi signal strength indicator, power supplied via USB or rechargeable lithium polymer battery, and IP55 construction.
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