Lasertron

Lasertron made plugins that were compatible with the TM500 system.

From this list:

• Q???? LASERTRON LASER TEST MODULE
• Lasertron QLC LASERTRON "Master Control"
• Lasertron QLX LASERTRON LASER TRANSMITTER
• Lasertron QLX-1300 LASERTRON LASER TRANSMITTER
• Lasertron QRX-700 LASERTRON LIGHTWAVE RECEIVER
• Lasertron QRX-7000 LASERTRON LIGHTWAVE RECEIVER
• Lasertron QLX-1000 LASERTRON LIGHTWAVE TRANSMITTER (COMES IN MANY DIFFERENT WAVELENGTH VARIATIONS)
• Lasertron Q???? LASERTRON LOCK-IN AMPLIFIERTRON LIGHTWAVE TRANSMITTER (COMES IN MANY DIFFERENT WAVELENGTH VARIATIONS)