The TTL 485 PRO is an advanced version of the TTL and 485 adapter, retaining the features of the PLU version while optimizing the circuit board and adding a metal housing to make it more suitable for complex environments.
Adopting original SP3485, the high-speed communication is stable, reliable and good compatibility.
The module realizes the interconversion of TTL signal and RS485 signal, no need for “receive - send” control, using this module is as simple as you operate the serial port.
Adopting 5.08mm plug-in terminals, smooth plugging and unplugging, sturdy and reliable.
The circuit only adopts 5V power supply, the output signal level of TTL signal terminal is 5V (the same as the power supply voltage), and the input signal level is 5V (compatible with 3.3V signal input).
The TTL terminal needs to be connected to the power supply when in use.
Adopt large package components, more stable and reliable.
With independent power supply isolation and signal isolation circuits.
TTL terminal has over-current protection and surge protection function. Ensure stable output of current and voltage, and strong anti-shock ability.
RS485 terminal with overcurrent protection, surge protection, lightning gas discharge protection circuit.
120R termination resistor pad is reserved on the board, which can increase the stability of signal transmission and reduce interference.
Baud rate support range: up to 2Mbps (In practice, the baud rate supported by this module is limited by the baud rate supported by the access devices at both ends, and needs to be adjusted according to the actual situation.)
Two on-board LED indicators are used to indicate the send/receive status of the circuit signals.
TTL indicator: green light is on when the TTL terminal receives data. 485 LED: green light when receiving data from 485 terminal.
Aluminum alloy shell, oxidized and frosted treatment, precise opening, solid and durable, exquisite workmanship.