Epson TM-290-II Operator's Manual page 56

(2) Drawer kick out drive signal
Output signal:
Output voltage;
Approx. 24 VDC
Output current; 1 A or less
Output waveform: The waveform of Figure B.1 is output at Point A
in Figure B.2 (ON time n1 and OFF time n2
ESC p
depend on command)
Figure B.1
(3) Drawer open/close signal
"L" = 0V
Input signal level:
(Connector pin #3): "H" = 2 to 5 V
Figure B.2
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