| Features of SC-CPR280 CPR Simulator Simulate standard airway opening. When performing chest compressions with the manual hand: The dynamic barcode indicator light shows the pressing depth: the green light indicates that the depth is correct, the yellow light indicates that the depth is not enough, and the red light indicates that the force is too deep. Contains a digital countin... https://www.cqscopelab.com/sc-cpr280-multifunctional-electronic-cpr-simulator