Heyi · H4-320B
The Heyi HY-320B (also referred to as H4-320B) is a wireless passive infrared (PIR) motion detector designed for use with Heyi smart alarm systems. It utilizes digital signal processing and automatic temperature compensation to provide reliable detection while minimizing false alarms. Technical Specifications Detection Method: Passive Infrared (PIR) using advanced digital signal processing. Connectivity: Wireless, commonly operating at 433.92 MHz. Power Source: Typically powered by 4 x 1.5V AAA batteries. Detection Range: Up to 12 meters with a wide 110° horizontal angle. Pet Immunity: Often includes immunity for pets weighing less than 35 kg (approx. 77 lbs). Transmission Distance: Can transmit signals to the alarm host at a distance of ≥50 meters in open areas. Key Features Automatic Temperature Compensation: Adjusts sensitivity based on the ambient temperature to maintain consistent performance. Low Power Consumption: Designed for long battery life, often featuring a low-battery alert signal sent to the control panel. Anti-Tamper Protection: Includes a tamper switch that triggers