Photometer 1) voltage output range: dc 6v/12v/24v/50v(auto range switch) 2) current output range: dc 0.1ma - 2.500a 3) current drift at full range: 0.05% reading/8 minutes 4) accuracy of a: (0.08% reading 0.02% range) 1) voltage output range: dc 6v/12v/24v/50v(auto range switch) 2) current output range: dc 0.1ma - 2.500a 3) current drift at full range: 0.05% reading/8 minutes 4) accuracy of a: (0.08% reading 0.02% range)