ONN‑M4F Modular LED Signal Tower Light 60/70mm Stack‑able Warning Light With Buzzer For CNC Automation Machine Product overview ONN‑M4F series modular signal tower light adopts flexible stack‑up modular design. Users can freely add or remove lamp modules on‑site. Built‑in DIP switch supports local configuration for steady‑on, flashing, high/low‑volume buzzer without extra controller.Multiple mounting brackets and wide‑range power options make it widely used for machine‑status
