Ultra Low Temperature Storage Box Portable Lab Cryogenic Freezer,28L Low Temp Freezer Storage Refrigerator with -40℃ to -86℃ Temperature Range 320W 110V

Important Notice:1. After receiving the goods, the machine should be left to stand for more than 4 hours before being pluggedin for use.2. Before use, the packaging materials should be cleaned up, and the packaging base tray should not be lefton the machine.3. The received low-temperature storage box is not locked. The key is placed inside the refrigerator. Due tothe low-temperature test the refrigerator underwent before packaging, negative pressure was generated,combined with the good sealing performance of the refrigerator, it caused difficulty in opening the refrigeratordoor. You can first pull it upwards forcefully, and then open it after a few minutes.4. The product should be placed in an air-conditioned room, at least 10 centimeters away from the wall.5. This product is used for low-temperature storage, not a rapid freezing device. Before purchase, the buyershould ask the customer service staff clearly to avoid purchasing errors and losses.6. When using the product, the empty box should be cooled to the set temperature first, and then the food orsamples should be placed in batches: Place the first batch of items around the refrigerator, wait for itstemperature to drop to the set temperature, then move the first batch of items to the middle part of therefrigerator, and then place the second batch of items along the sides of the refrigerator; follow the samesteps to place the third batch of items.7. Regularly (about 3 months) clean the condenser to maintain good heat dissipation effect.8. After using the horizontal low-temperature refrigerator for a long time, thick frost may form on the doorseal, affecting the sealing performance and usage effect of the product. You can remove the inner door seal.

• [Powerful Cooling] The automatic cascade refrigeration system utilizes a hybrid fluorocarbon-free refrigerant, delivering superior performance including robust cooling, rapid temperature reduction, and deeper cooling capabilities.
• [Highly Energy-saving] The machine operates stably even at ambient temperatures of +43°C.
• [Built to Last] Core components feature internationally renowned brands: compressor, pressure controller, thermostat, condenser fan motor, copper tube evaporator, and SUS 304 stainless steel inner tank. Reliable quality ensures long-lasting durability.
• [Electronic Display] The electronic thermostat features a digital temperature display with high/low temperature alarms and sensor failure alerts.
• [Accurate Detection] The temperature probe is equipped with a protective cover to ensure precise temperature detection.