Colin BP_306 three lead ECG leadwire PM03L Connector: 1.5 female 6P; three leadwire, terminal:4.0 snap. Compatible with: BP88, 306, 508 ... their old machines like HP 78833B, M1275 etc. Manufacturers for ECG machines trust us with their latest models products. We also ... have stocks of other ECG cables, SPO2 sensors, SPO2 cables, reusable ECG electrodes. Our factory and our innovation for ...