450/455 has superior performance, can use up to 10 kinds of sensor, including oxygen, carbon monoxide, hydrogen sulfide, sulfur dioxide, ammonia, chlorine, hydrogen cyanide, nitrogen dioxide, nitric oxide, hydrogen. Simple operation, users can manually to zero and calibration,convenient and quick. And maintenance free detectorcannot machine is different, the user can always switch,batteries and sensors can also easily be replaced.

Main features

Long service life, can replace the sensor and battery

The sensor can be calibrated, improve reading reliability

Non slip rubber shell, anti drop impact

The sound and light alarm, vibration alarm (optional)

High contrast display real-time readings, clear and easy to read

Authentication

China metrological instrument type approval certificate

Intrinsically safe

The European ATEX certification ATEX-II 2G EEx IA IIC T 4

Product specifications

Dimensions: 9.3 x 4.3 x 2.8cm

Weight: 156g

Sensor: electrochemical sensor

Relative humidity range: 15~95% RH (non - condensing)

Operating temperature: -20~50 ℃

1 Reading: real time reading:

Warning: super pre reading alarm

Alarm indicator light flashes red:: LED; acoustic: beep85dB; vibration: built-in vibrator (optional)

Battery life: about 18 months (40 hours per week)

About 20 hours (sound, light, vibration continuous alarm