MJ-971A even for the detection of high, medium and low frequency vibration, shock signal ,vibration detectors

Product description and advantage

1.Small and exquisite
2.Suitable for installation in doors, windows, balconies
3.High sensitivity
4.low noise,ultra-low  power consumption

Product description and advantage

MJ-971A-digital vibration sensor detector, using international advanced optical vibration sensing principle, set the vibration sensor, vibration analyzer in one, with the CPU processing technology for various types of ATMs and ATM insurers of different sizes cabinets and other equipment to prevent, effectively prevent equipment smashing, drilling, pry and other disruptive behavior occurs. MJ-971A is normally closed output can be generic and brand wired alarm host, while the hard disk recorders and controllers, such as supporting the use of a matrix. Detector sensitivity can be dual regulation, with a vibrating alarm cumulative effect, effectively prevent the occurrence of false positives is like. The products are small, simple installation, stable performance, wide pan around, the major banks have been used ATM ATMs and other equipment to prevent.

MJ-971A digital vibration detectors, with microprocessor control, alarm triggered by a single vibration amplitude is reached, or the time limit of the amplitude of the vibration of a number of different sizes to achieve accumulated flares. The weak vibration signal shielding, and not accumulated to generate an alarm, only the strong vibration or repeated vibration signal will only be considered valid and will be stored in memory a pulse count. At the same time it can be manually set the sensitivity to ensure an optimal operating point can be set according to the environmental conditions - prevention of false positives without reducing sensitivity.

Function Characteristics

Surface Material---- Probe radius (M)
Concrete ---- 1.5  (M)
Brick ---- 2.5  (M)
Steel---- 3  (M)
Glass---- 3.5  (M)
Plate-----3.5  (M)

• Optical Vibration sensing principle
• CPU processing technology
• Set vibration sensor, vibration analyzer in a
• Dual adjustable sensitivity
• The cumulative effect of vibration alarm
• Tamper signal line anti-cut function
• Small size, easy installation

Prevent area

Technical parameters

Mounting and fixing

Unpack and install combination

1, removal of the panel, insert the screw with a small community paper knife or screwdriver to cover the gap next (see Figure 1), gently pry the cover screws, loosen the screw, and then separated from the bottom surface of the lid (See Figure 2).

2, Connection: 12V - Power; TAMPER - Tamper / scissors; ALARM - signal lines.

3, Installation: Remove the bottom case RV971A detectors, fixed with screws to lay eyes on the ATM machine, or with a spring loaded in the "AB glue" to fix to the ATM machine.

Sensitivity adjustment

The sensitivity potentiometer counter-clockwise to the end (S1 jumper off), when sensitivity is the lowest, VR clockwise slowly to increase the sensitivity, the sensitivity of each set point, beating protect the surface (simulated attack by intensity), pay attention to the red light is lit, such as red light indicates an alarm, and this sensitivity is correctly set point point, and then try to beat the smaller efforts to test the sensitivity is too high. (S1 route closed cap clockwise to the end, when some of the highest sensitivity)