AC Adapter Charger for Topcon AD-15 DB-74C BT-74Q Battery Holder Fits RL-H4C RB

an explanation of the h4c the rlh 4c is a unique laser it is a flat plane rotating laser it has the working diameter of 2600 working feet which that means that 1300 foot out per window also nice thing about the rlh 4c is yes it's primarily used in flat plane only but occasionally when you get that job that requires a pitch or a little bit of slope and it doesn't justify getting a real slope laser then this also has the features in it where we call it econo grade and it's in one axis only and you can go up to 5% the other nice thing about the ROH 4c is that you've got two choices of it the one as you see here today comes with the rechargeable battery pack which we'll go over that here in a few seconds but you can also order it without rechargeables where it would just come with four d-cell flashlight batteries and then the final thing which is really the best about this unit is Topcon qu