Description
The PB-303R is an advanced wireless transmitter designed to enhance security systems by providing robust and flexible communication capabilities. Here’s an expanded overview of its features and functionalities:
Key Features:
- MCU Core Control: At the heart of the PB-303R is an MCU (Microcontroller Unit) that ensures efficient control and processing of signals. This allows for reliable operation and seamless integration with security systems.
- Signal Amplification and Long-Distance Transmission: The device is capable of transmitting signals over long distances, even in environments with strong obstacles. It supports signal amplification to ensure communication with alarm control panels is maintained, providing reliable performance in challenging conditions.
- Support for Multiple Detectors: The PB-303R can convert signals from up to 60 detectors. By using a learn enrollment mode, it pairs with each detector individually to minimize interference, ensuring that only signals from its linked detectors are transmitted.
- Multi-Level Transmission Capability: The system can extend its wireless signal up to 10 kilometers by using up to 15 transmitters. It uses a database exchange mode to transmit signals, including its unique 9-digit wireless address code and the detector’s address code to the next transmitter, ensuring reliable communication across multiple levels.
- Anti-Remove Alarm Function: Equipped with a built-in buzzer, the PB-303R includes an anti-remove alarm function to enhance security by alerting users to unauthorized tampering.
- Wireless Specifications:
- Receiving Sensitivity: -113dB, allowing for precise signal reception.
- Wireless Transmit Distance: Greater than or equal to 1500 meters.
- Wireless Receiving Distance: Greater than or equal to 120 meters.
- Emitting Power: Less than 15mW, ensuring energy-efficient operation.
- Emitting Frequency: Operates at 433MHz or 868MHz for versatile application.
- Power and Battery:
- Operating Voltage: DC 9 ~ 24V or AC 180V ~ 240V, providing flexibility in power sources.
- Operating Current: 25mA during standby and 150mA during signal emission.
- Features a built-in rechargeable battery that can last up to 8 hours during power outages, ensuring continuous operation.
- External Power Adapter: Includes a 15V/1000mA external power adapter for reliable power supply.
- Compact Design: The transmitter has dimensions of 167 x 112 x 40mm and comes in an ivory white color, allowing for easy installation and integration into various environments.
The PB-303R wireless transmitter is an excellent choice for enhancing the capabilities of security systems, offering advanced features and flexibility to meet diverse needs. Its robust design and comprehensive feature set make it suitable for both residential and commercial applications.


