Ashida electronics pvt. Ltd. Designers, developer &creator of electrical power protection relays & scada systems. The company has acquired iso 9001:2000 certifications from m/s. Bvqi, u.K. Ashida electronics pvt. Ltd offers dc failure alarm relay ava21d/1 available with features like; simple and sturdy design, contacts conform to is: 3231. Duty: 1250 va, attracted armature type compact design with positive action and dual relay element in single unit. The dc failure alarm relay is used for monitoring the dc control supply or panel and for annunciation ac supply is used.