ZR-3A is our most widely used of a super-regenerative receiver module, ZR-3A high-frequency receiver module stable and reliable performance, high sensitivity, low power consumption, low price, is widely used in automobiles, motorcycles, various fields of electric cars, home security systems and lighting, MP3, etc. which products pass FCC, CE certification.
1. received a variety of low-rate digital signal;
2. Industrial remote control; telemetry; remote sensing;
3. The anti-theft alarm signal receiving, remote control and other various household appliances.
II. Technical Specifications
1. Working voltage: 3.0VDC ± 0.3V
2. Operating Current: ≤2.5mA (5.0VDC)
3. How it works: super-regenerative
4. Modulation: OOK / ASK
5. Frequency range: 250MHz ~ 450MHz
6. Bandwidth: 2MHz (315MHz, decreased sensitivity when 3dBm test)
7. Sensitivity: better than -102dBm (50Ω)
8. Transfer Rate: (5Kbps (315MHz, -95dBm time)
9. Output signal: TTL level transparent transmission
10. Antenna length: 24cm (315MHz), 18cm (433.92MHz)
1. Antenna with a soft wire or other hard metal (such as rod antenna), the length of neither too long nor too short, otherwise it will affect the receiving distance. If you use soft wire, please straighten use, and try not to close to metal objects.
2. The power supply voltage for stability and low ripple factor, to be multi-stage filter (such as increasing the bead inductors capacitors, etc.).
3. If the recommendations with the MCU MCU clock frequency 4MHZ less and crystal as far away from the RF receiver module, otherwise the high harmonic crystal will affect the communication distance.