Thin DIN Signal Conditioners, Converters, Isolators, Transmitters | 
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| Model | Input/Output | Features | Product | 
    DC to DC Isolated Signal ConditionerField ConfigurableK109UI $250 *stock item*Open Datasheet Download Datasheet Open Installation Manual Download Installation Manual Click to see ALL Seneca products  | 
    
    Field Configurable Input Input: 0-20 mA, 4-20 mA, 0-5 VDC, 1-5 VDC, 0-10 VDC, 2-10 VDC, 0-15 VDC, 0-30 VDC Field Configurable Output Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA, 0-5 V, 1-5 V, 0-10 V, 10-0 V  | 
    
    
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    K109UI  | 
    
    DC to DC Isolated Transmitter | 
    
    Field Configurable Input Input: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA, 0-5 V, 1-5 V, 0-10 V, 10-0 V Field Configurable Output Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA, 0-5 V, 1-5 V, 0-10 V, 10-0 V  | 
    
    
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    K109S  | 
    
    Universal Input to 4-20 mA  | 
    
     Field Programmable Input Requires EASY-USB for configuration Input: –150 mV to +150 mV –30 V to +30V –24 mA to 24 mA RTD: Pt100, Pt500, Pt1000, Ni100 Thermocouple: J, K, T, E, R, S, B, N Potentiometer: 500 Ω to 10 KΩ Resistance: 1750 Ω Output: 4-20 mA loop powered Powered by the output loop  | 
    
    
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    K121  | 
    
    Thermocouple to DC Isolated TransmitterField ConfigurableK109TC $250 *stock item*Open Datasheet Download Datasheet Open Installation Manual Download Installation Manual Click to see ALL Seneca products  | 
    
    Field Configurable Input Input: Thermocouple: J, K, T, E, R, S, N, B Field Configurable Output Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA, 0-5 V, 1-5 V, 0-10 V, 10-0 V  | 
    
    
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    K109TC  | 
    
    100 Ω RTD to DC Isolated TransmitterField ConfigurableK109PT $250 *stock item*Open Datasheet Download Datasheet Open Installation Manual Download Installation Manual Click to see ALL Seneca products  | 
    
    Field Configurable Input Input: One 100 Ω RTD, 385 Curve RTD, 2, 3, or 4 wire –150 to 650°C, (–238 to 1202°F), 50°C min. span Field Configurable Output Output: 4-20 mA, 0-20 mA, 20-4 mA, 20-0 mA, 0-5 V, 1-5 V, 0-10 V, 10-0 V  | 
    
    
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    K109PT  | 
    
    RS-485 to RS-485 or | 
    
    K107A RS-485 to RS-485 Data X: One RS-485 half duplex Data Y: One RS-485 half duplex K107B RS-232 to RS-485 Data X: One RS-232 half duplex Data Y: One RS-485 half duplex  | 
    
    
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      ![]() K107A K107B  | 
    
	USB - UART TTL ConverterEASY-USB $140 *stock item*Open Datasheet Download Datasheet Open Installation Manual Download Installation Manual EASY-USB Software Link  | 
    
    Programming Kit for K121, T120, T121 | 
  
    Includes Converter Software mini CD (or download latest) Adapter cable (std USB cable not included)  |    
     
    EASY-USB  | 
    
    K-SUPPLY and KBUS Power Supply | 
    
    Regulated Power Distribution Input: 19.2 to 30 VDC Output: 19.2 to 30 VDC  | 
    
    
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    K-SUPPLY K-BUS  | 
    
    4 Digit 4-20 mA Loop Powered DisplayField RangeableS315  $150 *stock item* | 
    
    Loop Powered Display Input: 4-20 mA Display: 4 digit red LED  | 
    
    
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    S315  | 
    








    
    
    
    
    
 
    