Hi All,
Just got the Digi-Cabi latest model LE-90 LD from the IT Show. It's a black coloured one with strengthened casing. It looked more rugged than the normal models. The store owner from Digihub told me this model has just been released.
This is how I calibrated the settings to be at 40%:
1. When you received the box, don't immediately put your camera stuff in it. Switch it on, turned the know to the rightmost setting, i.e. at the C position. You may also like to put in another hygrometre for more comparison, just in case the default one doesn't work. I purchased it from a QuickFix shop at IMM. It's made in Germany and cost about $30. If you cannot trust this German brand, trust me, cos you're reading this posting!
2. Wait for about 0.5 to 1 day for the RH reading to read 35-40%. Then set the setting to 1-2 o'clock position, with 1 o'clock position being the best. Wait for another 0.5 to 1 day for the RH value to stabilise.
3. Once the RH value stabilise, put in your gear! Don't be alarmed if the reading goes up, this is because humidity will enter when you open the door! Wait for the reading to stabilise. If you're unsatisfied with the reading, do some fine adjustment and observed again. After that, let it be. Don't tune up and down the knob.