Indeed, alarm pawl for remote speech direction changes ions, in particular hotel remote speaker.

• 1. 远程改变水平方向钻机的操作系统、方法及部件 [P] . 中国专利： CN1266367C . 2006.07.26
• 2. 用于改变车辆启动环境的远程控制系统和控制方法 [P] . 中国专利： CN106828300A . 2017-06-13
• 3. Remote speech direction changes station, in particular hotel remote speaker. [P] . 德国专利： DE1745246U . 1957-05-23

  机译： 远程语音方向转换站，尤其是酒店远程扬声器。

• 4. Circuit arrangement for remote alarm selection of networks, preferably remote speech direction changes selection of networks and a method for the production of telecommunication connections in remote alarm selection of networks [P] . 德国专利： DE19705032A1 . 1998-08-13

  机译： 用于网络的远程警报选择的电路装置，优选地，用于远程语音方向改变网络的选择，以及用于在网络的远程警报选择中产生电信连接的方法

• 5. Circuit arrangement for remote alarm selection of networks, preferably remote speech direction changes selection of networks [P] . 德国专利： DE29701999U1 . 1997-07-03

  机译： 用于网络的远程警报选择的电路装置，优选地，远程语音方向改变网络的选择

• 1. Recent Progresses in Atmospheric Remote Sensing Research in China-- Chinese National Report on Atmospheric Remote Sensing Research in China during 1999-2003 [J] . 邱金桓, 陈洪滨 大气科学进展（英文版） . 2004,第003期
• 2. Pigeon Robot for Navigation Guided by Remote Control:System Construction and Functional Verification [J] . Zhengyue Zhou, Denghui Liu, Hong Sun, 仿生工程学报（英文版） . 2021,第001期
• 3. Legacy Alarm System Integration: Challenge for Remote Alarm Monitoring System Upgrades - (PPT) [C] . Lionel Silverman Remote Monitoring and Networking / Onsite Power Conference . 2011
• 4. Source and channel coding for speech transmission and remote speech recognition. [D] . Bernard, Alexis Pascal. 2002
• 5. Global warming leading to alarming recession of the Arctic sea-ice cover: Insights from remote sensing observations and model reanalysis [O] . Avinash Kumar, Juhi Yadav, Rahul Mohan 2020
• 6. Hearing loss and speech understanding in noise in Aboriginal and Torres Strait Islander children from locations varying in remoteness and socio-educational advantage [O] . Kiri Mealings, Samantha Harkus, Jennifer Hwang, 2020

• 1. Proceedings of SPIE （ Volume 6200 ） Remote Sensing of the Environment： 15th National Symposium on Remote Sensing of China出版发行通知 [J] . . 国土资源遥感 . 2006,第2期
• 2. THE REMOTE SENSING IN COAL GEOLOGY——A study on detection of coal spontanous burning by remote sensing in the coal fields in the north of China [J] . Guan Haiyan(China Coal Remote Sensing Geology Centre) . 遥感信息 . 1990,第A02期
• 3. Simulations of Seasonal and Latitudinal Variations in Leaf Inclination Angle Distribution: Implications for Remote Sensing [J] . Karl F. Huemmrich . 遥感技术进展（英文） . 2013,第2期
• 4. 开放远程教育:管理角色的改变——能力构建 [C] . G.Dhanarajan ,邓立真 ,Wang Tat Meng . 2009年国际远程开放教育论坛 . 2009