1. No electromagnetic interference. 2. Quick maintenance The front and rear gauzes and emitter point can be quickly dismantled for easy cleaning, maintenance and replacement. 3. Outage memory Start is not necessary after power-on automatic start for keeping operation with the previously set parameters. 4. The emitter point is made of the special alloy, which is not easily worn after use for a while. 5. Monitoring alarm High voltage and fan operation indicator light, anomaly alarm indicator light and buzzer alarm. 6. Signal output Alarm signal output, can be connected with the equipment transmission. 7. Locking After locking, all keys will be invalid and unlocking is required. 8. Outage protection After the front air window is taken down, the machine will be powered off. 9. The casing and function can be customized according to the customer requirements.