1. Wide working temperature range with cooling and heating function, temperature range: -20~200.
2. with 2pcs of LED display controller, can show the setting temperature & actual value, and alarm value for overtemperature. 
3. Efficient fast, simple topping up liquid.
4. Ensure fast cooling at high temperature and can acheive 200 ~ -20 temperature control continuously.
5. the cycle system is closed, there is no oil mist and water vapor happend, so as to assure the lab safety and heat transfer fluid lifetime.
6. Use copeland brand compressor, circulation pump, stable performance and reliable quality.
7. Self-diagnosis function; freezer overload protection; high-pressure switch, overload relay, thermal protection device, liquid low level protection, high temperature protection and temperature fault protection.