Description WZ SIGNAL signal generator is mainly used for debugging of industrial field PLC process instrumentation electric valve and so forth It s easy to use with a friendly Chinese character operation interface The signal generator is small and light but has a long standby time and high precision Features Internal reverse and overcurrent protection 30V protection voltage Built in one single 3 7V lithium battery power supply the using time varies based on the usage It can be more than 6 hours with 20mA continuous output With internal battery voltage hint UV light when the undervoltage light is on please turn off the charging Do not use for a long time please charge once every two months Charge with micro USB Operating temperature range 0 50 degrees Celsius Custom Function In order to facilitate on site debugging the upper and lower limits of the output signal can be set according to the requirements of the equipment The active 4 20mA output upper and lower limits passive 4 20mA output upper and lower limits and 0 12V output upper and lower limits can be set separately and this function can be freely put on and off for field application Automatic Output Function This function can automatically change the output mode according to the program It can be automatically output only by setting the parameters which is used for aging and automatic testing of valves and other equipment This function consists of the following parts automatic mode cycle number in