... 1.7 MHz frequency Ultrasonic Nebulizer with Time Setting, Safety Devices and Alarm Devices, 100mL Capacity !!Features of this portable ultrasonic ... is abjustable)* Timer (with buzzer)1-30 min & continuopus* Safety devicesWater level sensor, Fan motor stop, Thermostat.* Warning devicesLow ... unit)4.5KgAccessories: Ultrasonic Nebulizer with Time Setting, Safety Devices and Alarm Devices, 100mL Capacity