Tonometer SW-500 with vertical and horizontal two working modes, wireless output print data. The equipment is used to measure intraocular pressure, using the principle of:  the probe hits the surfaces of different hardness at a certain speed, has a different reaction when the probe rebounds. Be of advantages of high accuracy, portable, without anesthesia, without the cross-infection, etc.

Features:
- Measurement can go along both in standing and lying posture
- Wireless data printing
- Easy to learn, easy to use
- Lightweight and handy
- No anesthesia, avoiding discomfort reaction

Specifications:
- Measuring Range: 3mmHg～70mmHg
- Measuring Error: ±1.5mmHg(3mmHg≤intraocular pressure≤25mmHg), ±2.5mmHg(25mmHg＜intraocular pressure≤70mmHg)
- Transport and Storage: Ambient temperature:-20℃~+55℃, Relative moisture:≦95%, Atmosphere pressure:500hPa~1060hPa
- Running: Ambient temperature:+5℃~+40℃, Relative moisture:≦80%, Atmosphere pressure:700hPa~1060hPa
- Rating voltage: DC3V(2 AA Batteries)
- Rating input power: 1VA