Sig-Net is a broadband countersurveillance bug detector that detects and locates active radio bugs.

Sig-Net can detect all types of analogue and digital signals including elusive burst transmitters, such as GSM phones. Whichever mode the unit is operating in, the threat from burst transmitters is constantly monitored with activity immediately indicated to the user.
Sig-Net can be used hand-held to detect and locate covert transmitters, wall-mounted next to doors to provide access protection for sensitive locations or stand-alone on a desk to provide unobtrusive real-time protection during meetings.