Model

HT-220D

HT-320D

Probe type

Uncooled focal plane

Uncooled focal plane

Resolution ratio

220x160 infrared focal plane

320x240 infrared focal plane

Focal length

6.52mm

6.52mm

Eyepiece

Single eyepiece display (the dioptric compensation is adjustable)

Single eyepiece display (the dioptric compensation is adjustable)

Field angle

35°x26°

35°x26°

Digital zoom

2 X

2 X

Wavelength coverage

8μm-14μm

Frame rate of thermal images

9Hz

Color palette

Rainbow/red heat/black heat

Focusing mode

Fixed

Image storage

JPG

Battery

Built-in rechargeable batteries

USB

Micro USB

Working time

3 hours

Power off time

5 minutes (Automatic power-off time)

Product weight

189g

Product size（length × height）

133x55 mm（with eye patch）

Work temperature

0℃- 45℃

Storage temperature

-20℃- 60℃