|   | 
        Four-Wire 
          Resistive  | 
        Five-Wire Resistive  | 
        Pen Touch  | 
        Capacitive  | 
        Surface Wave(Saw)  | 
        Infrared Touch (Ir)  | 
       
      
        | PRODUCT SIZE | 
        1.7" - 24" | 
        10.4" - 24" | 
        15" - 19" | 
        12" - 24" | 
        10.4" - 30" | 
        10.4" - 42" | 
       
      
        | TOUCH LIFE | 
        1 - 2 million 
          touches | 
        30 - 35million 
          touches | 
        100 million 
          touches | 
        100 million 
          touches | 
        50 million 
          touches | 
        Long-term reliability | 
       
      
        | SCRATCH RESISTANCE | 
        Hard Coated | 
        Hard Coated | 
        Hard Coated 
          (SiO˛) | 
        Hard Coated 
          (SiO˛) | 
        Glass Overlay 
          Moh's hardness rating of 7 | 
        Glass Overlay 
          Moh's hardness rating of 7 | 
       
      
        | CONTAMINANT RESISTANCE | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
        Resists moisture, dirt, vinegar, ammonia based food products and cleansers | 
       
      
        | INPUT METHOD | 
        Finger, Gloved Hand, Stylus | 
        Finger, Gloved Hand, Stylus | 
        Stylus Pen | 
        Finger | 
        Finger, Gloved Hand, Soft pliable stylus | 
        Finger, Gloved Hand, Stylus | 
       
      
        | CONTROLLER | 
        USB, RS232 | 
        USB, RS232 | 
        USB, RS232 | 
        USB, RS232 | 
        USB, RS232 | 
        USB, RS232 | 
       
      |