Voltcraft sl 100 sl 200 digital sound level meter compatible wind protection voltcraft sl 100 sl 200 the spare windshield for voltcraft sound meters sl 100 51 1600 and sl 200 51 5136 is an attachable protective cap made of foam for suppressing disturbing wind noises ideal for measurements in the open the large pore foam material provides optimal sound throughput voltcraft spare windshield for sl 100 sl 200 digital sound meter