TL: The TL line is Leopard equivalent with an optional remote display/programmer, 40+ input signal conditioning options, up to two relay outputs, and one channel 4-20 mA or 0-10 Vdc analog output.
TL series of transmitters are perfect for local process control applications (setpoint relay alarms or on/off control) and putting the sensor signal out on a 4-20mA loop (supported inputs include 4-20mA, AC/DC voltage/current, temperature, resistance and load cells). Texmate Leopard TL Series Transmitters Product Brief

TI: Texmate's legendary and cost-effective Tiger microPLC and Leopard Process Controllers are now available in DIN rail mount configurations.
The TI line is Tiger equivalent. It includes the same 140+ input signal conditioner options, up to six relay outputs or 16 digital outputs, one or two channel analog outputs (4-20mA or 0-10VDC) and RS-485/Ethernet (ASCII or Modbus) communication options.
It is suitable for power/energy (single phase), volts, amps, process inputs, weighing, batch, displacement and many other applications that take advantage of advanced functions such as dual totalizers, 32point input linearization, dual PID, cross channel math and IIoT readiness (Edge computing capable using TexBASIC).

TT: The TT line has single/dual inputs (voltage, current, temperature), single/dual 4-20mA outputs or 4-20mA/RS-485 (Modbus). Texmate TT Series Transmitters Product Brief

TL
TL
Series

TL-4-20mA
TL-4-20mA
4-20mA Isolator

TL-ACA-RMS
TL-ACA-RMS
AC 5 Amps

TL-ACV-RMS
TL-ACV-RMS
AC-Volts 0-300V AC

TL-Frequency
TL-Frequency
Line Frequency

TL-RPM
TL-RPM
Frequency / RPM

TL-TC-RTD
TL-TC-RTD
Temperature
TC/RTD

TT-1S1M
TT-1S1M
TC/RTD/4-20mA
Single Input, Single Output 0-10V/4-20mA

TT-2D2MC
TT-2D2MC
TC/RTD/4-20mA
Dual Input, Single Output(0-10V/4-20mA) & RS-485

TT-2D2MM
TT-2D2MM
TC/RTD/4-20mA
Dual Inputs, Dual Outputs 0-10V/4-20mA

TTM-2S2MC
TTM-2S2MC
TC/RTD/4-20mA
Dual same type Inputs, Single Output(0-10V/4-20mA) & RS-485 with Math Function

TTM-2S2MM
TTM-2S2MM
TC/RTD/4-20mA
Dual same type Inputs, Dual Outputs(0-10V/4-20mA) with Math Function