Operating features   • -25°C to 150°C for RW-25G/   -35°C to 150°C for RW-40G   • Microprocess PID control/ Auto-tuning/ Calibration   • Digital timer: 1 min to 99 hr 59 min, delayed ON/ OFF   • Over-temperature limiter and low fluid level protection   • 3 different temperature values memorable without auto-tuning   • Digital LED display (0.1°C resolution) with splash-proof keypads   • RS-232 interface available   Constructional features   • Turbulence reduced five-speed duplex pump and built-in cooling coil let you use in open or closed bath applications   (1 to 3 steps of pump for internal circulation/ 4 and 5 steps for external circulation)   • Baffle plate screens circulating pump, heater and sensor to minimize shaking bath fluids and protect sample and   operators from direct contact   • Dry-running protection; automated heating element cut-off and audible and visual warning   • Seamless stainless steel tank with a reservoir drain that resists corrosion and make cleaning easy   • Use CFC-free refrigerant R-134A, R-404A and double service valve to prevent the leakage of refrigerant   • Quick-release front grille for easy condenser cleaning and space saving design uses minimal bench space