| Horizontal Symbol | Vertical Symbol | Description |
 HPE11B16 |
 VPE11B16 |
Normally Open Emitter-Receiver - DC Driven |
 HPE12B16 |
 VPE12B16 |
Normally Closed Emitter-Receiver - DC Driven |
 HPE11B22 |
 VPE11B22 |
Normally Open Emitter-Receiver AC/DC Driven 2 PIN |
 HPE12B22 |
 VPE12B22 |
Normally Closed Emitter-Receiver AC/DC Driven 2 PIN |
 HPE11B23 |
 VPE11B23 |
Normally Open Emitter-Receiver AC Driven 3 PIN |
 HPE12B23 |
 VPE12B23 |
Normally Closed Emitter-Receiver AC Driven 3 PIN |
 HPE11B24 |
 VPE11B24 |
Normally Open Emitter-Receiver DC Driven 3 PIN |
 HPE12B24 |
 VPE12B24 |
Normally Closed Emitter-Receiver DC Driven 3 PIN |
 HPE11B25 |
 VPE11B25 |
Normally Open Emitter-Receiver AC Driven 4 PIN |
 HPE12B25 |
 VPE12B25 |
Normally Closed Emitter-Receiver AC Driven 4 PIN |
 HPE11B26 |
 VPE11B26 |
Normally Open Emitter-Receiver DC Driven 4 PIN |
 HPE12B26 |
 VPE12B26 |
Normally Closed Emitter-Receiver DC Driven 4 PIN |
 HPE13B25SC |
 VPE13B25SC |
FORM C Emitter-Receiver AC Driven 5 PIN |
 HPE13B26SC |
 VPE13B26SC |
FORM C Emitter-Receiver DC Driven 5 PIN |