DZDT431 All Bands Cell Phone Detector     2G+3G+4G
                             + optional 2.4GHz ISM band detection
It is very easy to operate and highly portable. It has the same detection capability and most of
the features as our DT401 advanced cellphone detector. It has very slick appearance, light weight, and
can fit most of the shirt pockets.
It can catch every sporadic short message transmission up to 50 meters in distance. The detection  
frequency bands can be customized to suit user's specific local frequency allocation. The sensitivity
( the detection distance) can be adjusted easily by pressing the two up/down buttons.
So, it only detect cellphone signals and has very high immunity to noise. The advanced software enable
the filtering of most of the in band signals emitted from non-cellphone devices such as a DECT cordless
phone. The chance to have a false alarm is nearly none.
Once a signal is detected, LED indicator will flash accompanying with alarm signal for a short period of time.
There are three alarm modes to be chosen. The beeping tone in open air, the beeping tone in earphone, and
the vibrator. Beeping tone pitch varies
with respect to signal strength.
The reliable built-in lithium battery when fully charged can support the detector for 8 hours continuously. Low battery warning is given
through LED display and beeper. Battery can be charged with an AC adapter (included) or any device that has a USB port. The charge up time
is less than 1.5 hours. The two green dots at the lower part of the display will light up during charging and distinguished when fully charged.
  • To set the sensitivity, simply press the up or down button and release at the desired percentage shown on LED display.
  • To select vibrator mode, press any of the up or down button prior to pushing up the main switch. It will go back to
                          beeper mode when device is power up again without pressing any of the buttons.
  • This device can be operated free standing on a flat plane or held in hand. The antenna is not designed to be directional.

Frequency bands: (per customer order)          *numbers shown below are typical

Band                  Taiwan                                     US/Canada                           Europe

700                  703-748 MHz                          699-716 MHz                        703-733 MHz
750                                                                   777-787 MHz                              
800                                                                                                                 832-862 MHz
850                  825-845 MHz                          814-849 MHz
900                  880-915 MHz                                                                         880-915 MHz
1800                1710-1785 MHz                                                                     1710-1785 MHz
1900                                                                1850-1915 MHz                     
2100                1920-1975 MHz                      1710-1755  MHz                   1920-1980 MHz
2500                                                                 2496-2690 MHz
2600                2500-2570 MHz                                                                     2500-2570 MHz
                      2570-2620 MHz (TDD)                                                          2570-2620 MHz

Sensitivity: > -70 dBm@ Antenna (Adjustable)
Dynamic Range: 35 dB
Range: >30 Meters (Typical city environment)
Antenna: Internal
Detection Mode: Peak Power Detection
Sensitivity adjustment: Up and Down Buttons from 0 to 100%
Alarm Modes: Beeper (Open air), Beeper (Earphone), Vibrator + LED flasher
Power Supply: Internal lithium battery
Charge Time: <2.5 hours
Charge port: USB to micro-USB AB type jack
Operation Time: >8 hours
Dimension:15x8x2 cm
Weight:150 grams
Attachments: AC to USN adapter, USB to microUSB connector, Earphone
Warrenty: 1 year

  DarZong Technology, Co. Ltd.                                                         
                                   Please contact:    
TEL:             +886-3-562-6793                         FAX: +886-3-562-6641         

                                        No. 20, Lane 19, Bade Road, Hsinchu City, 30069, Taiwan   
 Detect 2.4 GHz ISM band devices:
      For Wi-Fi transmitters (Router, Hot Spot, hand set)
         detection, 2.4GHz band detector can be internally
         added on or as a stand alone device for simplicity.

      This is the only device can catch illegal
                     transmission of short messages.
DT431 is a super sensitive cellphone detector at budget price.
DT431 can detect up to 8 frequency bands simultaneously.
DT431 is precisely designed to posses accurate rejection to
       frequencies out of the allocated cellphone band.