Features: 
 Main module: 12\22\24 points; Extension module: 22 points; It
 
is flexible for extending, and the optimal configuration: 7 I/O 
extension modules, 1 voice module, and 1 SMS module; 
 Program memory capacity: 320 FBDs, EEPROM;
 
 It is allowed to place a Li-ion battery to power the clock; 
Under the circumstance of DC12-24V, the main machine at 
most has 12 voltage analog inputs 0-10V, 2 current analog inputs 
0/4-20mA and 2 analog outputs 0/4-20mA; 
 High-speed operation: at most 4 high-speed inputs 10KHZ and 
2 high-speed outputs 10KHZ; 
 MODBUS protocol, and can be connected to SH-300 (Text 
Panel); 
 New function blocks: pulse width modulation (PWM), pulse 
output (PTO), ACC, SMS and analog calculation etc.;