Externí bzučák pro TM-T88V a TM-T20.
- slouží ke zvukové signalizaci tisku - pro přivolání obsluhy například v kuchyni.
- připojuje se do konektoru peněžní zásuvky, která v kuchyni není potřeba.
- ovládat lze buď pomocí ovladače tiskárny, nebo pomocí ESC sekvencí.

Epson OT-BZ20-634:OPTIONAL EXTERNAL BUZZER for T20/II, T70II and T88V, Accessories, Accessories: Accessories, Epson TM-T88V Series, Epson TM-T88V (012): Serial, PS, ECW, EU, Epson TM-T88V (031): Serial, w/o PS, ECW, Epson TM-T88V (041): Serial, w/o PS, EDG, Epson TM-T88V (042): Serial, PS, EDG, EU, Epson TM-T88V (051): Powered USB, w/o PS, EDG, Epson TM-T88V (052): Powered USB, w/o PS, ECW, Epson TM-T88V (813): Parallel, PS, ECW, EU, Epson TM-T88V (833): Parallel, PS, EDG, EU, Epson TM-T88V (837): Parallel, w/o PS, ECW, Epson TM-T20 (001): USB, PS, EDG, EU, Epson TM-T20 (111): USB, PS, ECW, UK, Epson TM-T88V (032): Serial, PS, ECW, UK, Epson TM-T88V (815): Parallel, PS, ECW, UK, Epson TM-T88V (082): Serial, PS, EDG, UK, Epson TM-T88V (835): Parallel, PS, EDG, UK, Epson TM-T88V (151): Bluetooth, PS, ECW, EU, Epson TM-T20 (113): Ethernet, PS, ECW, UK, Epson TM-T88V (041A0): Serial+DMD, w/o PS, EDG, Epson TM-T88V (954): BT, iOS, PS, EDG, UK, Epson TM-T20II (002A0): Built-in USB + Serial, PS, EDG, UK, Epson TM-T20II (003A0): Built-in USB + Ethernet, PS, EDG, UK, Epson TM-T88V (044A1): Serial, PS, White, UK, Epson TM-T88V (044B1): Wifi, PS, White, UK, Epson TM-T88V (031B1): Wifi, PS, ECW, UK, Epson TM-T88V (321B1): Wifi, PS, EDG, UK, Epson TM-T88V (033A1): Serial, PS, Black, UK, Epson TM-T88V (033B1): Wifi, PS, Black, UK