noun which may take the genitive case particle 'no'
low-power; low-electricity
Describes devices, systems, or operations that consume little electric power. Often used in technical specifications and product descriptions.
この小電力のセンサーは電池で長期間動きます。
This low-power sensor runs on batteries for a long time.
小電力無線設備は免許が不要な場合が多い。
Low-power radio equipment often does not require a license.
低電力 is a near-synonym also meaning low power, but 小電力 is more common in compound terms like 小電力無線.
Compound of 小 (small) and 電力 (electric power). The exact historical derivation is uncertain; the spelling is conventionally associated with the meaning.