Medical Monitoring System with 24 hours trend memory is manufactured by SS Technomed Pvt. Ltd. SS Technomed Pvt. Ltd. Is an ISO 9001:2000 certified company. With the model Tiashi - PO 23, this Medical Monitoring System with 24 hours trend memory features Graphic LCD display of plethysmograph. The Medical Monitoring System also has LED display of SpO2 & Pulse Rate, easy menu driven operation and a PC interface.