Product model: -2.0 The module can provide a DC power supply ranging from 0V to 10V, which needs to be provided by the customer. IN1 or IN2 (which can be connected to a button or NPN sensor) send corresponding commands through RS232 for short circuiting or disconnecting the negative pole (only sending commands once for rising and falling edges). Working voltage: within the range of DC 0-10V Trigger mode: Low level (NPN sensor) Module size: Length 82mm x Width 50mm x Height 32mm Output interface: DB9 female head standard RS232 Standby power consumption: DC12V/18mA, maximum operating 23MA Color:White Material:ABS+PCB Package Contents: 1 * Voltage Signal Module Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.