Dual-Element Pyrodetectors

Excelitas Dual-Element Pyrodetectors are well established as the performance standard in motion detection. Our design features two sensing elements connected to each other in reverse polarity to provide an AC-signal with motion and common mode rejection for non-moving radiation. Specify various window sizes to meet desired fields-of-view. Our Dual-Element Pyrodetectors cover the advanced family of DigiPyros, including our Low-Power DigiPyros for battery-operated motion detection.

See Related Content below for a technical introductory video to the extensive line of Excelitas Pyroelectric Sensors for motion detection.

Excelitas Dual-Element Pyrodetectors have been well established as the performance standard for motion detection

Product List

Excelitas PYD 1378 Dual-Element Pyro
Part Number
PYD 1378 (LHi 778)

PYD 1378 Low Cost Dual-Element Pyro

The Excelitas PYD 1378 Dual-Element Pyrodetector (replacement to the LHi 778) features two elements in series connection with FET in-source follower circuit, integrated into a TO-5 metal housing with a small optical window.
Excelitas Low-Profile, Dual-Element Pyrodetector Series (PYD 1384 / PYD 1394)
Part Number
PYD 1384 (LHi 874); PYD 1394 (LHi 944)

PYD 1384, PYD 1394 Dual-Element Pyros

The Excelitas PYD 1384 (replacement to LHi 874) / PYD 1394 (replacement to LHi 944) Pyrodetector Series is the Low-Profile variant of the PYD 1388/PYD 1398 Standard Analog Pyrodetectors. The Low-Profile, Dual-Element Pyrodetectors feature two sensing elements in series connection and FET in source-follower circuit, connected into the low profile TO-39 Metal Housing with optical window a source follower circuit
Excelitas PYD 1388 and PYD 1398 Standard Analog Dual-Element Pyro Series
Part Number
PYD 1388 (LHi 878), PYD 1398

PYD 1388, PYD 1398 Dual-Element Pyros

This Pyrodetector Series represents Excelitas standard analog Pyrodetector offering. Our PYD 1388 (replacement to LHi 878) and PYD 1398 (replacement to LHi 968) Dual-Element Pyrodetectors feature two elements configured in a series connection with an FET in source-follower circuit. They are integrated into a robust TO-5 Metal Housing with an optical window
Excelitas PYD 1588/1598 Low-Power DigiPyro Series
Part Number
PYD 1588, PYD 1598

PYD 1588, PYD 1598 Low-Power DigiPyros

With a mere 1.8V power requirement, Excelitas offers the first real low-power enhanced DigiPyro® Series. The PYD 1588 and PYD 1598 DigiPyros are fully integrated, Dual-Element Detectors with two different window size options. These DigiPyros offer added features and low-current power consumption for extended remote motion detection in battery operated devices.
Excelitas Dual-Element DigiPyro Detector Series (PYD 1788/PYD 1798)
Part Number
PYD 1788; PYD 1798

PYD 1788, PYD 1798 Dual-Element DigiPyros

The NEWLY IMPROVED PYD 1798 is now re-engineered for improved energy efficiency of a mere 1.8V at 5µA power requirement, making it an ideal motion detection sensor for extended service life in mobile and remote battery-operated devices. Both of these Excelitas Dual-Element Pyrodetectors feature two elements in series connection in TO-5 Metal Housing with optical window options. This Pyrodetector Series is part of the DigiPyro® family that feature internal integrated circuitry to convert the element signals into a 14-bit digital output.
Excelitas PYD 1794 Dual-Element Low-Profile DigiPyro shown in compact TO-39 housing
Part Number
PYD 1794

PYD 1794 Dual-Element low profile DigiPyro

The PYD 1794 Dual-Element Digipyro Detector features two elements in series connection in the low-profile TO-39 Metal Housing with optical window. This Detector is part of the Excelitas DigiPyro family that feature internal integrated circuitry to convert the element signals into a 14-bit digital output.
PYD 2592 Dual-Element Low-Power SMD DigiPyro
Part Number
PYD 2592

PYD 2592 Dual-Element Low-Power SMD DigiPyro

This Dual-Element Pyrodetector features two standard elements in parallel connection designed into a compact SMD (surface mount) housing with optical window. In alignment with our innovative low power DigiPyro detectors family, this design streamlines integration to the host system with significantly reduced form factor. The integrated motion detection unit and interrupt features are perfect for battery operated applications.
Excelitas PYD 2792 SMD Dual-Channel DigiPyro Thermal IR detector
Part Number
PYD 2792

PYD 2792 Dual-Element SMD DigiPyro

The latest addition to our DigiPyro® Detector offering, thisDual-Element Pyrodetector features two standard elements in parallelconnection designed into a compact SMD (surface mount) housing with optical window. In alignment with our innovative DigiPyro detectors family, this design streamlines integration to the host system with significantly reduced form factor and internal integrated circuitry to convert the element signals into a 14bit digital output.
Excelitas PYD 5731 Miniature Dual-Element DigiPyro
Part Number
PYD 5731

PYD 5731 Miniature Dual-Element DigiPyro

With the diameter of 4.7mm the PYD 5731 Miniature, Dual-Element DigiPyro® is one of the smallest designs in the Excelitas Pyrodetector portfolio. The PYD 5731 features two elements in series connection in TO-46 Metal Housing with optical window. This Detector is part of the DigiPyro family that feature internal integrated circuitry to convert the element signals into a 14-bit digital output.