There is single sound tone Signal Phone called as SN-1, but it is for only DC Voltage and AC product is not producing now.
Please process as below for additional inquiry and purchsing
A. Online Purchasing Inquiry
1. Firstly check the information of the Products through “Website > Products > Products Group“.
2. Please put inquiry through “Website > Customer Support > Question and Reply“.
B. Offline Purchasing Inquiry
Please contact after checking of person in charge through “Website > Purchase > Purchasing from Abroad“.
Thank you for your inquiry.