Wireless magnetic switch detector-北京冠川智能

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Magnetic switch detector

Wireless magnetic switch detector

Wireless magnetic switch detector

GC-5112

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  • Wireless magnetic switch detector
The wireless door is magnetically used to monitor the state of the switch of the door, and when the door is opened, the wireless door magnetic sensor transmits specific radio waves to the host at a long distance. The wireless alarm signal of the wireless door magnetic field can be transmitted 100 meters in width, and the wireless alarm signal can be transmitted for 20 meters in a general house and is closely related to the surrounding environment.

wireless door magnetic generally adopts a power saving design, when the door is closed, it does not transmit the radio signal, at this time, the power consumption is only a few micro-amps, when the door is opened, the wireless alarm signal of about 1 second is immediately transmitted, and then the wireless door is stopped at its own time, in ord to prevent that continuous transmission of the transmitter to cause the internal battery to be exhausted and to affect the alarm, the wireless door is also designed with a battery low-voltage detection circuit, when the voltage of the battery is lower than 8 volts, the lower light-emitting diode will be on, and at this time, the special battery of the A23 alarm needs to be replaced immediately, Otherwise, the reliability of the alarm will be affected.

A wireless door magnetic sensor is generally installed above the inner side of the door, and consists of two parts: the smaller part is a permanent magnet, a permanent magnet is arranged inside the permanent magnet, and the permanent magnet is used for generating a constant magnetic field, when the permanent magnet and the dry reed pipe are close (less than 5mm), the wireless door magnetic sensor is in a working waiting state, and when the permanent magnet leaves the reed pipe for a certain distance, the wireless door magnetic sensor immediately transmits a 315mhz high-frequency radio signal containing an address code and an auto-identification code (i. e., a data code), that is, whether it is the same alarm system by identifying the address code of the radio signal, and then, based on its own identification code (i.e., the data code), it is determined which wireless door magnetic alarm is.

The address code of the wireless door magnetic sensor is completely consistent with the address code of the alarm host, and the shell of the wireless door magnetic sensor can be opened to observe that:
1-8 bit address code setting:
it can be seen that the left side of the wireless door magnetic internal 2262 chip (or a compatible chip) has a three-bit 12-layer jumper setting area, in which the address code setting area is numbered from the top to the bottom, and the pins in the middle of the jumper seat are respectively and the first to eighth pins of the 2262 chip are turned on, The jumper seat PCB on the left is labeled as a “L”, and is connected to ground. The jumper seat PCB on the right side is marked with a “H” representation and a positive power supply. For example, the jumper cap on the top is put on 1 and L, then the address code of the first foot of 2262 is set to 0, Similarly, if 1 and H are short-circuited with a jumper cap, the address code of the first foot of 2262 is set to 1, and if nothing is moved, the address code of the first foot of 2262 is set to be suspended, and so on, the 8-bit address code setting can be completed, The address code must be consistent with the corresponding receiving board address code to function properly.
4-bit data code setting:
The function of the data code is that the transmitter device and the receiving device can transmit a 4-bit 2-state data which can be transmitted by the transmitter device and the receiving device under the premise that the address codes are consistent.
The 4-bit data code setting area is arranged below the address code setting area, the number 13-10 data code setting and the address code setting are similar, the data code has only two states: the low level 0 and the high level 1 (if the suspension is considered as 0, and the L-link (1) is to determine whether the pin and the L of 2272 are short-circuited by a jumper cap, and the pins 13, 12, 11, and 10 of the 2262 chip are connected from the upper and lower four rows of jumper seats, respectively.

Oscillation resistance setting:
The oscillation resistance means the value of the resistance between the 15th and 16th feet of the 2262 chip, which determines that the width of the data pulse must be matched with the corresponding receiving plate, or the remote control circuit cannot function properly. For example, our 8-zone alarm host and home phone alarm system is a 4.7M system.

Low voltage indicator light:
The module is provided with two LEDs, the upper white-white red LED is a transmission indicator light, when the module detects the human body to carry out alarm transmission, the LED is synchronously illuminated, the following green LED is a low-voltage indicating lamp, and when the battery voltage is lower than 8 volts, the LED is on, Remind the user to change the battery.
 

GC-5112

Transmitting power: 30 MW.
Working current: 10 Ma.
Working voltage: 12 V  23A alarm special battery.
Working frequency: 315 MHz / 433 MHz.
Coding chip: SC2262/1527.
Oscillation resistor is switchable: 1.5m / 4.7M / 3.3M.
Size: 71x36x15.4 mm.
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GC-5112
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