The Hall effect sensor module is used to detect the proximity of magnets. It's much smaller. When the magnetic field exceeds the threshold, the open collector output transistor turns on, the logic compatible output goes low, and the onboard LED indicator lights up.
high speed (turn-on threshold 35450 gauss, minimum hysteresis 20 gauss, operating voltage range 4.5-24 volts. This module uses the Allegro MicroSystems A3144EUA sensor. 3-pin interface, signal, V +, and GND. I have.
The HC12 Wireless HFUART Communication Module is a new generation multi-channel embedded wireless data transmission module. The radio frequency of 433.4 473.0MHz can be set to communication channels, and the steps are 400KHz, for a total of 100 channels.
The maximum transmission power of the module is 100 mW (20 dBm), and the sensitivity of the receiver is 116 dBm at a baud rate of 5000 bps and a communication distance of about 500 meters.
The module uses a weldable stamped hole encapsulation method. The module size is 27.4mm * 13.2mm * 4mm (including antenna sheet, not spring antenna), which is convenient for customers to incorporate into application systems. The module has a PCB antenna sheet ANT1, which allows users to use coaxial cable and external antennas in the 433MHz band.
The
module also has an antenna weld hole ANT2, which is a convenient user weld spring antenna. The user can choose the type of antenna according to their requirements. The module contains an MCU, which the user does not need to program extra, just send and receive.
UART data. The module uses various UART transmission modes that the user can choose from.
According to the requirements for using AT commands. 4 UART modes FU1, FU2, FU3, FU4, average operating current is 3.6mA, 80A, 16mA, 16mA, maximum operating current is 100mA (full power transmission state). The HC12 module is based on the SiLabs SI4463EZ RadioPro family chip. This module provides a wireless data transmission / reception range of approximately 1km outdoors. It is a very easy-to-use low-power wireless chip.
This module has an onboard STM8S003F3P6 MCU that communicates with SI4463, allowing users to communicate with the HC12 module via a simple TTL 2-wire serial interface (RX, TX, GND).
Features :
- IEEE 802.15.4g compliant
- Frequency range = 1191050 MHz
- Receive sensitivity = 126 dBm
- Serial TTL (RX, TX, GND) interface
- Modulation (G)FSK, 4(G)FSK, (G)MSK, OOK
- Max output power +20 dBm
- Low active power consumption 10/13 mA RX, 18 mA TX at +10 dBm
- Ultra low current powerdown modes 30 nA shutdown, 50 nA standby
- Data rate = 100 bps to 1 Mbps
- Fast wake and hop times
- Highly configurable packet handler
- TX and RX 64 byte FIFOs
- Auto frequency control (AFC)
- Automatic gain control (AGC)
- Low BOM
- Low battery detector
- FCC Part 90 Mask D, FCC part 15.247, 15,231, 15,249, ARIB T-108, T-96, T-67, RCR STD-30, China regulatory
- ETSI Class-I Operation with SAW
Specifications:
| Model | HC-12 |
| Communication Interface | UART |
| Operating voltage | 3.2 ~ 5.5V |
| Transmission power | 20dBm (maximum) |
| Reference distance | 1000 meter |
| Working frequency band | 433.4 ~ 473.0MHz |
| Antenna interface | Spring Antenna/Antenna Socket |
| Working Humidity | 10% ~ 90% |
| Working temperature | -25 ~ +75 |
| Length (mm) | 27.5 |
| Width (mm) | 13.5 |
| Height (mm) | 4 |
| Weight (gm) | 2 |