Key Lock

The shutter will not open and trigger will not engage when the key lock is activated. Manual Shutter Lock The shutter will not open when the manual shutter lock is activated

Automatic Shutter Lock

The shutter automatically closes after every test is complete.

Optical Sensors

Optical sensors ensure the bezel of the instrument is flat against the surface before the shutter can be opened.


The LPA-1 utilizes a state-of-the-art “room temperature” detector that operates in a thermal range between 20-120° F. Device is ready when activated; no warm-up/cool-down time required.

Performance Characteristic Sheet