Uses: SLB18-QJ41 type electric detonator tester is a portable pocket-sized instrument, applicable to the mining area, the unit /zxqc/, factory testing electrical networks and electrical detonators exploded DC resistance. Suitable for the ambient air is -40 ℃ ~ +50 ℃, relative humidity of not more than 98% of the field conditions used. 0-3 ohm measuring electric detonators; 0-9 ohm test leads.