Sound signal activation every hour. Activation of every minute temperature reading. Activation of the "training" mode of the tubes. This feature extends the life of the tubes. Also supplied: temperature sensor, universal power supply 100 - 240 V + USA/EU/UK/AU plug.
I send parcels within 24 hours. You can write at any time and I will answer all your questions. This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Parts & Accessories\Vintage Tubes & Tube Sockets". The seller is "sarmat1968" and is located in this country: UA. This item can be shipped worldwide.