... 4-5cm<) compression intensity ;digital strip indicator light (yellow ,green ,red )shows compression depth ;counter display ;sound prompting of ... 4.Artificial respiration(Inhalation) indicator light display ,LCD counter display and sound prompting :a.Inhalation is <500ml/ ... result in air rntering into stomach,indicator light display ;digital counter display ,sound prompting . 5.Radio of compression ...