Digital Mili Second Meter Function:run,act Meas:185*142*115mm Range:0.0001S~9999.9S Digital Mili Second Meter:1.Model:8502.One-Way--Air contact cose and cut time,action time of positive voltage .Dual-time difference of singals .3.Start signals:Air contact,positive voltage,zero voltage (optional)4.2.Range: 0.01MS~9999.99SFunction: run, act Deflection: ≤ 5 × 10-5Power Supply: 220V±10%, ...