Interference-free detection (PPB or PPM digital display) Detection of low gas concentration (TLV level) Easy to replace cassette tape (cassette remainder display included) Provision for connection to personal computer (RS-232C interface:Optional) Easy to check the detection function and alarm operation Desktop size promotes easy transportability Ideal for detection of C5F8, C4F6, THF(C4H8O) with built-in special pyrolyzer