Keywords: Soundtech, soundtech electronic, soundtech mdt-269 manual, soundtech digital timer manual, dl 538. Mar 14, 2022. Created: 2003-11-15. Expires:.Buy Soundtech Mini Digital Timer MDT-269 in Singapore,Singapore. Product details of Soundtech Digital Timer Mdt269 (24Hr) Daily and weekly program Minimum Soundteoh MDT-269, 13A Digital Mini Timer · Daily and weekly progam · Minimum switching period 1 minutes · Easy to read LCD display · 1.2V rechargeable battery for Soundtech MDT-269 Manual PDF This is one of the good automatic digital timers in the SG market. It is very suitable to use as a timer for aquarium lights.