1 The nTRIG signal is not directly from the MCU pin, so high and low levels are different from other input and output
interfaces. When designing the external control module, please refer to I/O Voltage in Table 3-3. This external trigger signal can be either level trigger or pulse trigger. Level trigger: A trigger pull activates a decode session. The decode session continues until a barcode is decoded or the
trigger is released. Pulse trigger: When the trigger is pulled and released (pulse width : 50ms), scanning is activated until a barcode is decoded or the decode session timeout expires. The duration can be programmed. To learn how to program the parameter, please see the RT214 user guide. For the external trigger circuit, please see the “Trigger Circuit” section.

※ 2 Keep level low above 10ms to reset the engine. If this pin is not used, leave it unconnected.
※ 3 This output signal can be used by an external LED to indicate good read status. The nGoodRead pin produces a high output (default duration: 20ms, user-programmable) when a good read occurs. The Good Read LED can be programmed On or Off. To learn how to program these parameters, please see the RT214 user guide. For the external LED circuit design, please see the “Good Read LED Circuit” section in Chapter 5. If the nGoodRead pin is not used, leave it unconnected.
※ 4 This output signal can be used by an external beeper circuit to generate audible feedback to the user to indicate power-on
and good read statuses. Power On beep: The nBEEPER pin produces a PWM output (duration: 400ms; frequency: 2090Hz, 2630Hz, 3130Hz and
4260Hz.) 215ms after power-on. The beep can be programmed On or Off. To learn how to program the parameter, please
see the RT214 user guide. Good Read beep: The nBEEPER pin produces a PWM output (default duration: 80ms; default frequency: 2710Hz) when a good read occurs. The beep can be programmed On or Off. To learn how to program these parameters, please see the RT214 user guide. For the external beeper circuit design, please see the “Beeper Circuit” section. If the nBEEPER pin is not used, leave it unconnected. ※ 5 Pin 6 is the external illumination control signal. For the external illumination control circuit design, please see the
“External Illumination Control Circuit” section. If the external illumination control signal pin is not used, leave it unconnected.
※ 6 To be compatible with other engines of our company, the 12-PIN connector is recommended below.