The DB-917TT experimental box is mainly used for learning diodes, transistors working principle, and typical application circuit. Experimental box by the composition of the photodiode, transistor, 12V relays etc wiring K4 jack. In addition, additional experimental box without desoldering installation template can be demolished.
Direct input, Photodiode input, Phototransistor input, Direct output
Lamp Output, Electric relay output 12V