Replacement remote control for NEC LCD displays (RU-M121/RU-M117 compatible). No setup required, just insert batteries and it's ready to use. 【Compatible Models】 V422 / V463 / V551 / V651 / X401S / X461S / X462S / X551S / X551UN / X552S / M491-L1 / P401 / P402 / P461 / P521 / V22 / V323 / V323-2 【Specifications】 ・Material: ABS resin (lightweight and durable) ・Color: Black ・Power: AAA batteries x 2 (sold separately) ・No program setup required ・All main functions confirmed to work 【Features】 ・Operates the same as the original, ready to use immediately after replacement ・Large, easy-to-press button design with good visibility ・Low power consumption, supports long-distance operation 【Condition】 New, unused (batteries not included) If it doesn't work, please use new alkaline batteries. Widely compatible with NEC displays used in homes, offices, and schools.