The auction is for a Russian made vacuum relay B2B-1B. Rating 15A 4 KV on HF. Good for power amplifier band switch, plate voltage switch, remote antenna switch etc. up to 3000 Watt. Control voltage 18 - 22VDC. Good, clean condition. Tested

I ship all items by registered airmail with tracking number. Airmail shipping worldwide usually takes up to 20 days if not delayed by the Customs / Postal service in the country of destination.