Devices that block cell phone signals - emf blocking cell phone case samsung j7 sky
Professional type Jamming Signal Detector Practical protection of fleet management/GPS tracking system
vodasafe VSJD101
General:
This device applies with fuzzy scanning technology, specially made for detecting jammer signal during 50 MHz - 6.0 GHz without interference with cell phone, WiFi, WLAN, Bluetooth and DECT phone.
his device has 10 LEDs indicating the detected signal strength. When detects jammer signals, the LED will light from Green to Yellow to Red indicating the strength of detected signal.
This device includes a special environment noise verified circuit. This device is available for all the popular brand GPS trackers.
Features:
Wire connection of relay output
Environment noise verification
Sensitivity adjustment
Specifications:
Dimension: L130 x W 68 x T 26 mm (L 5.1 x W 2.7 x T 1”)
Weight: about 195g
Power: Available during 12V – 24V DC, 150 mA
Detecting Frequency: Wideband jammer of Cellphone and WiFi frequency bands
Warning mode:10 LEDs
Alarm output:1.0A relay, with NO /NC output
Sensitivity Tuner: Eliminate the environment interference (background noise)
Warning:
Use this device as an auxiliary, supplemental help or aid to prevent the risks caused by GPS signal jammer or GSM signal jammer, etc. This device does not take the place of all the supervisions. Performance of this Radio frequency (RF) product will be affected by the circumstance of use. The producer and marketing group accepts no liability for any loss or damage by malfunction or misuse.
devices that block cell phone signals
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