Ad
related to: itc-100 intercom system installation
Search results
Results From The WOW.Com Content Network
1980s MirTone intercom system. An intercom, also called an intercommunication device, intercommunicator, or interphone, is a stand-alone voice communications system for use within a building, small collection of buildings or portably within a small coverage area, which functions independently of the public telephone network. [1]
HS 31 (new developed register system, introduced in 1931, based on a new flat type relay and a 100-point two-motion selector, suitable for small and large exchanges) HS 52 (new developed register system, introduced in 1953, based on a new 120-point selector, which was in fact a 4 x 30-point uniselector with 2 x 4 brushes offset by 180°, no ...
An intercom telephone is a special kind of telephone that controls an intercom system. Intercom telephones can be found in residential, commercial, and educational settings. [1] For an example, a school is an environment that displays all the capabilities of an intercom
There are many types of wireless intercom systems on the market. Most wireless intercom systems communicate by radio waves using one of the frequencies allotted by various government agencies. Some wireless intercom systems communicate using the 802.11 standard. [1] There are also systems that advertise themselves as wireless, but communicate ...
Intercom systems that use a speaker in a room as both a speaker and a microphone will often use VOX on the main console to switch the audio direction during a conversation. The circuit usually includes a delay between the sound stopping and switching direction, to avoid the circuit turning off during short pauses in speech.
The product line of Clear-Com has expanded beyond party-line wired units to include multi-channel intercoms and wireless technology. Clear-Com patented a multi-channel wired digital intercom system in 2009, used in the HelixNet product line. The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award. [7]
A 1980s Mirtone intercom system. Mirtone was founded by Manuel Mira in the early 1960s. The company started out manufacturing apartment intercoms in Toronto. The company expanded and started producing fire alarm systems and became the 2nd largest fire alarm manufacturer in Canada. Mirtone was bought by General Signal in 1988. [2] [3]
Couch F5GX non-coded fire alarm pull station and F294 10" bell.. The firm S. H. Couch, often known as simply Couch, was a Quincy, Massachusetts, manufacturing company founded circa 1901 in Boston [1] [2] [3] after the dissolution of Whitman & Couch, a partnership, and a second entity known as Couch & Seeley. [4]
Ad
related to: itc-100 intercom system installation