- KT88
- Chelmer Valve
- THERMIONIC VALVE
- KT880
- Optek Technology, Inc.
- (KT860 - KT890) Slotted Optical Switches Phototransistor Output
- KT880L11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880L15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880L51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880L55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880N11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880N15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880N51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880N55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880P11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880P15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880P51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880P55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880T11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880T15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880T51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT880T55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881L11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881L15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881L51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881L55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881N11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881N15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881N51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881N55
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881P11
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881P15
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output
- KT881P51
- Optek Technology, Inc.
- Slotted Optical Switches Phototransistor Output