Sorry, this product is no longer offered for sale. It was discontinued on Mar 26, 2024The recommended replacement product is .
Calibration Module, Spare, Photodiode Sensors, DB15

Order 818-SCAL-OPT when you need to order a spare calibration module only, for 818 Series photodiode detectors, without recalibration of the detector.
For example, order this part when you want to upgrade 818-XX to 818-XX/DB, or 818-XX/CM to 818-XX/DB, or when the calibration module is lost or broken.
The order requires the following information at the time of order, to be able to identify the correct calibration file:
1. the required calibration module type:
- DB15 D-shaped connector
2. the detector model:
- 818-SL series
- 818-ST series
- 818-IR series
- 818-UV series
- 818-IG series
- 818-ST-UV series
- 818-SL-L series
- 818-IR-L series
- 818-UV-L series
- 818-IG-L series
- 818-ST2 series
- 818-ST2-UV series
- 818-ST2-IR series
- 819C/D-IG series
- 819C/D-SL series
- 918C/D-UV series
3. the serial number.
We recommend that optical power meters and detectors be calibrated every 12 months to ensure NIST traceability.