Whittemore compact veterinary fluid warmer

1. user can set target temperature, it can remain relatively constant temperature 

When real-time temp is lower than target temp, the indicator light is on(green), means the warmer is heating; When real-time temp up to/higher than target temp, the indicator light is off, means the warmer is not heating. 

2. double groove can heat 2 tubes simultaneously, most of others can heat 1 tube only.

3. Optional function: drop sensor can detect fluid status and give "Empty" alarm, remind user to change new fluid bag or stop infusion.