January 14, 2026 – Excelitas Expands DigiPyro Family with Ultra-Low Power Option
Excelitas Technologies has introduced the PYD 2597 Ultra-Low Power DigiPyro sensor, a new passive infrared (PIR) sensor designed to significantly extend battery life in remote and battery-operated motion detection applications. [citation:3]
The sensor operates from supply voltages as low as 1.4V with current consumption of just 2µA at 1.8V, making it one of the lowest-power digital PIR sensors available on the market. The device is fully integrated with two pyroelectric elements and manufactured using fully RoHS-compliant materials.
Key Features:
- Supply Voltage Range: 1.4V to 3.6V
- Current Consumption: 2µA at 1.8V (typical)
- Integrated Motion Detection Unit (MDU) with interrupt functionality
- One-Wire Digital Interface for simplified system integration
- Typical responsivity: 3.2 kV/W
- Field of View: 130° in TO-5 package
- Excellent immunity to electromagnetic interference
The sensor’s wake-up mode allows systems to remain in low-power standby until motion is detected. When motion is detected, the MDU asserts an interrupt that can wake a sleeping microcontroller, enabling true “zero-power standby” for battery-operated devices. [citation:3]
“The PYD 2597 was designed to address one of the biggest challenges in PIR-based motion detection—minimizing power consumption in always-on applications,” said Hermann Karagoezoglu, Product Manager, IR Sensing at Excelitas. “Its ultra-low current operation and low-voltage capability enable efficient, battery-powered designs without compromising detection performance.” [citation:3]
The sensor is well suited for long-range motion detection, intrusion alarms, energy-saving systems, horizontal mounting designs, and battery-operated devices. Compared with alternative digital PIR sensors and camera- or radar-based motion detection technologies, Excelitas’ solution delivers lower power consumption, lower cost, and inherent privacy advantages. [citation:3]
Availability: The PYD 2597 was launched at SPIE Photonics West 2026 and is available for sampling, with volume production scheduled for Q2 2026.