Ominicare's NH-DSD And NH-SSD Are High-Precision Timing Cores With Double-Sided Display Screen Receivers. They Feature A Built-In Timer With A Temperature Compensation Function That Effectively Reduces The Time Error Caused By Extreme Weather Conditions. The Total Time Error Within One Year Is Less Than 2 Minutes. Additionally, A Built-In Power Amplifier Module Can Directly Drive The Loudspeaker To Deliver Clear Voice Output.