Detecting frequencies
50 MHz - 6.0 GHz
Detecting Distance
RF Signal Wireless/Wired Camera 2G Cellphone
5.8GHz Wireless Camera
about 8 feet
2.4GHz Wireless Camera
about 20 feet
2G Cellular phone
about 40 feet
2G Cellphone
about 50 feet
Wired Camera
about 15 feet
Warning mode 1
Audible alarm and 3 LEDs
Warning mode 2
Silent, only 3 LEDs (SH-055GR)
Warning mode3
Silent, 3 LEDs and earphone hearing