ON2170-R photo interrupter module, photo reflector with NPN transistor output by Panasonic Generally used as a sensor to detect the presence of items such as paper flow through a printer (Jam detector) or safety interlocks on equipment panels. Package Size : 2.7 x 3.4 mm Download Panasonic ON2170 datasheet: Equivalent to NTE 3105 Download NTE 3105 datasheet: Status: NOS (New Old Stock) from Panasonic RoHS compliant: YES