Usage Tips:High precision, steady performance and easy operation. Dual LED nixie tube digits for display, clear for reading. The inst ent has functions of clearing zero amp; PV modification. Work with various pressure sensor and weight sensor. Suitable for for weight control, auto accumulation/mean for up/down batch control, etc. MYPIN Digital Weighing Controller Load-cells Indicator 2 Relay Output 4 Digits Model: LM8-RRD(4 Digits) Display: LED Display Power Supply: LM8-RRD: 220V/110V AC; LH86-RRD: 90-260V AC/DC Accuracy: LM8-RRD: 0.2%Fahrenheit.Splusmn;2dgt; LH86-RRD: 0.1%Fahrenheit.Splusmn;2dgt Power Consumption: le;5VA Sampling Rate: LM8-RRD: le;16 times/second; LH86-RRD: 16-128 times/second Input: Regular: mV(Load Cell), 1-4 pcs Load Cell Output: 2 RELAY Relay: Open Contract 250V AC 3A or 30V DC 3A COSφ=1 Auxiliary Power: DC 5V Item Size: 95 x 85 x 46mm / 3.74 x 3.35 x 1.81in Item Weight: LM8-RRD: 258g / 9.12oz; LH86-RRD: 188g / 6.63oz color: black Material: plastic + metal Package Contents: 1 * Weighing Controller 2 * Bracket 1 * User Manual (English) Only the above package content, other products are not included. Note: Light shooting 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.