Compatible with R32 and HFO-1234yf refrigerant Heat semiconductor sensor type Gas suction method Detection method: buzzer sound and 9-stage LED display Target gas: Frequency such as R410A, R407C, R404A, R507A, R134A, R12, R22, R500, R502, HFO1234YF,R32,R245FA 深度(mm):40 高度(mm):184 检测目标:频率气体,HFO-1234yf,HFO-1234ZE,HFO-1234ZE,HFO-12333ZD,HFO-12333ZD,HFO-12333ZD,等等。电池(内置)