Peristaltic dosing pump RS232 communication 3-digit LED displays rotating speed Laboratory, phamaceutical or industry use Peristaltic dosing pumpStandard type Model number: ... Lightly tap the key of sixty seconds test, peristaltic pump will work one minute under your set rotating speed.5 ... best choice of supporting a variety of instruments.6. Acceptable pump heads for YZ1515x, YZ2515x, SN25, DG-1, DG-2 ...