Replacement for OP-902 / LP7515 and weight indicator, Connector 4 pin, AC adapter included FEATURES: Smooth indicator shape with steady performance PCB board, is suitable for industrial or commercial use Can be powered by AA batteries or the AC adapter (included) Multiple weighing units: (lb/oz/kg) Gross/Tare/Zero Low power design, longer battery usage time Hold function, locks the weight Idle mode and automatic power off function Low-battery detection and warning 6 digits 0.7” tall LCD display with backlight Splash proof keyboard and display RS232 Output Stainless steel wall mount bracket included Calibration instructions included Please note, this has 4-pin connector back of the readout. If you need 5 pin look at our store, MNM Scales we do have 5-pin as well.