- Photodiodes (including avalanche and PIN photodiodes) - Silicon and InGaAs, offered in a variety of sizes to meet different sensitivity and speed requirements
- Phototransistors - photodiode-amplifier combinations - Silicon from PerkinElmer and TT Optek
- Infrared detectors - from Judson Technologies, covering the whole IR spectrum
- Photon counting modules - from PerkinElmer, based on APDs or CPMs
- Channel photomultipliers - ultrasensitive optical detectors from PerkinElmer
The Pacer portfolio includes products from PerkinElmer, Kodenshi, TT Optek, TAOS and Judson Technologies.