Wireless Digital Clock

Posted : admin On 18.08.2021

The Qi-L131 combines the features of a digital alarm clock, a multicoloured LED night light, and Qi wireless phone charging station. For devices without Qi wireless, a USB-C charging connector is. Sony - AM/FM Dual-Alarm Clock Radio - Black. Model: ICFC1TBLACK. User rating, 4.3.

Looking for large digital display LED clock specification that will meet your facility's needs. Synchronized, Reliable Clock Suppliers are Ready to Help!

Valcom’s Wireless Master Clock Transceiver (V-WMCA) provides a single time standard for wireless clocks. The V-WMCA features browser based setup eliminating the need for resident software.

Valcom’s Wireless Master Clock Repeater (V-WMCRA) extends the transmit range of wireless correction signal to more clocks in your organization. The Wireless Master Clock Repeater has dual use that can be used as a repeater or, with additional equipment, as a transmitter.

The Valcom GPS Master Clock receives accurate time updates via GPS satellites. It is available for either wired (V-GPS) or wireless (V-GPS-TX) clocks allowing you to choose the best option for your facility. With the GPS Master Clock there is no need for a Network Time Protocol (NTP) source.

The Digital Clock Protocol Interface (V-DCPI) allows many Valcom analog intercoms to provide accurate digital time correction to Valcom wired and wireless clock systems. The V-DCPI can be used in conjunction with the V-VCU, 2-Wire Clock Driver for wired clock correction.

The Valcom 2-Wire Clock Driver (V-VCU) corrects Valcom analog and digital display clocks over a single pair of UTP cable. Time may be adjusted to update from once every second to once an hour. Depending on the size of your system and set up, multiple V-VCUs may be used.

The V-DCH Digital Clock Head End incorporates a V-VCU 6 Amp 2-wire Clock Driver and a V-DCPI Digital Clock Protocol Interface in a convenient 2u 19' shelf assembly. The unit provides a complete interface between the DB15 clock output of either of the V-SER, VC-2927 or V-2927 Clock Cards.



  • Can Act as a Transmitter or Repeater for Valcom Wireless Clock Systems
  • TCP/IP Network Connection
  • Frequency Tuning Circuit Allows for Time Correction w/Changes in Temperature
  • Field-Enabled Daylight Savings Time (When Used as a Primary Master Clock)
  • Can Act as an Interface Between Existing Systems to Valcom Wireless Systems


Important Note: The V-WMCRA is not a stand alone wireless master clock.
It must be used with a V-DCPI Digital Clock Protocol Interface, a V-GPSA GPS Receiver or a V-WMCA Wireless Master Clock.

  • Transmits Wireless Clock Correction Signal to the Valcom Wireless Clocks
  • 915 - 928 MHz Frequency-Hopping Technology
  • Can Transmit up to 2000 Meters in Open Space
  • Wirelessly Receives & Transmits Data


Master Clocks Allows Connection to Valcom Intercom Systems

Wireless Digital Clock
  • GPS Input
  • Interfaces Directly with Valcom Analog & Digital Clock Systems
  • Up to 10 Server Addresses Can Be Pre-Programmed into the Unit for Continuous, Accurate Synchronization
    (with Web Interface Software Upgrade)
  • Extremely Intuitive GUI that Allows User to Configure All of the Settings of the Master Clock through a Simple Web Interface
  • Automatic Bi–Annual Daylight Savings Time Changes (When Used as a Primary Master Clock)
  • Ten Year Battery Backup for Timekeeping


  • Facilitates 2-Wire Digital Clock Correction from the Class Connection ES, ACS by Valcom Systems
  • Easy Connections


Color Control Package

  • Package includes:
    • 1 Valcom V-CCU Clock Controller
    • 1 Valcom 24V Power Supply V-C6124P
    • 1 24V Wiring Harness
    • 1 6-Pin Silver-Satin Cord
    • 1 6-Pin RJ-11 Wiring Block
  • Easy Connection
  • Supports Two Wire Clock Operation
  • Individual Current Limited 2 Amp Outputs
  • User Selectable Correction Intervals
  • Data Error LED Indicators
  • Power/Data Output LED Indicators.


Digital Clock Head End Driver, 2-Wire

  • The V-DCH Digital Clock Head End is a Combination of the V-DCPI and V-VCU Pre-Mounted and Connected on a Convenient 2u 19” Rack or Wall Mount Shelf
  • Facilitates 2-Wire Digital Clock Correction to the Class Connection ES and ACS by Valcom systems.
Support Documents

Wireless Time Clock

Marketing Sheet V-WMCA
Installation Manual V-WMCA
Technical Specification V-WMCA
V-WMCA Static IP Setup Tool

Marketing Sheet V-WMCRA
Installation Manual V-WMCRA
Technical Specification V-WMCRA

Marketing Sheet V-GPSA/V-GPSA-TX
Installation Manual V-GPSA/V-GPSA-TX
Technical Specification V-GPSA/V-GPSA-TX

Marketing Sheet V-DCPI/V-VCU/V-DCH
Technical Specification V-DCPI
Installation Manual V-DCPI

Technical Specification V-VCU
Installation Manual V-VCU

Technical Specification V-DCH

English conversation practice by grant taylor pdf download free

Valcom One Way Paging Guide
Valcom Talkback Paging Guide

  • V-WMCA Dimensions: 11” L x 17.5” W x 1.75 D (27.94 cm x 44.45 cm x 4.45 cm)
    Weight: 6.5 lbs (2.90 kg)
  • V-WMCRA Dimensions: 11” (27.94 cm) L x 8” (20.32 cm) W x 1.7” (4.32 cm) D (with bottom cover)
    Antenna Length: 7” (17.78 cm)
    Weight: 4 lbs. (1.8 kg)
  • V-DCPI Dimensions: 22.75”H x 7.70”W x 1.55”D (6.98cm H x 19.55cm W x 3.94cm D)
    Weight: 4.0 lb. (1.81 kg)
  • V-GPSA/V-GPSA-TX Dimensions: 11” L x 17.5” W x 1.75 D (27.94 cm x 44.45 cm x 4.45 cm)
    Weight: 6.5 lbs (2.90 kg)
  • V-VCU Dimensions: 2.63”H x 12.36”W x 7.75”D (6.7cm H x 31.4cm W x 19.7cm D)
    Weight: 7lbs. ( 3.2kg) w/ power supply
  • V-DCH Dimensions: 4.75' (12.06 cm) x 19' (48.26 cm) x 12.5' (31.75 cm)
    Weight: 24 lbs (10.88 kg)
Connection Drawings

V-DCPI Tech Note:
Using Fire or Bell Display option on 2-wire Digital Clock Systems using shared intercom cables. cad pdf

Compatible Clocks

Digital Clock With Wireless Charging

Wireless & Wired Analog and Digital Clocks