It can be applicable under the mine volatile circumstances full of methane (CH4）and coal dust.

Product Parameter ：

Atmospheric pressure ：80KPa～106KPa

Ambient Temperature : –20℃～+60℃

Relative Humidity ：No more than 95% （+25℃）

Material：304/316l/45#

Voltage：AC127V，50Hz

Current ：No more than 350mA

Explosion-proof Sign ：ExdⅠ IP66

Enclosure Protection: IP65

Inner Dimension: 295(L)mmX67(W)mmX50(H)mm

Net Weight：10Kgs

Minimum Illumination：No more than 1.0Lux

Fiber Port：FC；

Fiber Mode: Single

Optical Wavelength ：1310nm;

Optical Power（dbm）：-15～-4；

Transmission Distance：≤10Km