The differences are the specification of signal part and volume between two products of special specification. Signal part of S150ULS-B is composed in SPK model and its volume is 85dB, and Signal part of S150ULS-BH is composed in SEN15 model and its volume is 108dB.
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.