The UT381PV Solar Irradiance Meter measures solar irradiance in natural and simulated sunlight.

It features dual temperature channels, a built-in tilt/azimuth sensor, and connects to the iENV

app and UT541 Analyzer. Ideal for PV panel installation, maintenance, and lab testing.

Specialized Anti-UV Housing(F1)

Prevents UV-induced aging and housing cracks.

One Device, Four Dimensions

Features a integrated sensor and supports an external probe for complete visibility.

Simultaneous Dual

Temperature Display

Features a integrated sensor and supports

an external probe for complete visibility.

Bluetooth APP Connection

Real-time measurement and PDF/CSV

report export.

Bluetooth Connectivity to the UT541

The analyzer acquires data from the meter via wireless transmission.

Audio-Visual Tilt Alarm Mode

Alerts when the tilt angle deviates from the set value.

Large Storage Capacity

Wirelessly connect to a mobile app for

data viewing and analysis.

Defying Harsh Environments

IP65 rating, 2m Drop Protection