Lathem Wall Clocks
Lathem wall clocks can be furnished for synchronous wired, minute impulse and stand-alone installations. All are interchangeable with many other such clocks on the market.

• Round or square faces
• 10", 12", and 15"
• Arabic numerals or chapter marks
• Black or gray
• Surface, semi-flush or double face mountings are available
• Semi-flush clocks are easily installed into wall boxes of most brands for retrofit.

Lathem Wall Clocks-
LTR Series
Each unit contains the correction schedule of most clock systems. At installation, a 2-digit code is entered by keypad to select the clock system type (synchronous, minute impulse, dual motor, etc.). Once selected, the master furnishes the appropriate correction signals.

Three weekly signal schedules can be entered by keypad for audible device control. Up to 384 events can be programmed in the schedules. The LTR 2-384 has two circuits, the LTR 4-384 four and the LTR 6-384 six. Each circuit controls signals to different areas of the plant. Units are available in either surface or semi-flush mount designs. The semi-flush models provide knockouts on all sides of the backbox for easy wiring.

• Virtually any type of clock system can be controlled.
• No special programming skills are required. A 2-digit code is entered to select the clock system type.
• Installation is easy, too. This small lightweight unit installs on any wall surface and provides convenient terminal locations for wiring into system.
• A keypad, similar to a telephone keypad, makes even the most complicated signal schedules simple.
• Three weekly signal schedules can be programmed in advance and selected as seasonal changes require.
• 128 events can be entered per schedule (384 total events).
• Each time event selects any combination of days and any combination of circuits for maximum flexibility.
• Timekeeping is highly accurate using a quartz crystal oscillator (± 2 minutes/year).
• A standby, automatically rechargeable battery provides timekeeping for up to 7 days of power failure.
• An accumulator, provided for many secondary clock types, tracks lost time during power failures and immediately corrects the secondary clocks for lost time when power resumes (opposed to waiting for the next hourly or twelve hour correction sequence).
• A daylight saving feature provides secondary clock correction at 2:00 AM on Sunday morning of the time change.
• A security switch, located inside the locked door assembly, prevents unauthorized tampering of data.

Eight modes are offered on the LTR Series as briefly described below:

• MODE 1: Set Time-To set the current, four digit time display on master control in 12 hour format with AM/PM.
• MODE 2: Set Day-To set the current day of week. An LED visually indicates the selected day on the display.
• MODE 3: Manual Circuits-To manually activate signal circuits at unscheduled times. This mode is also used for manual clock system advance.
• MODE 4: Program Circuits-To review and edit the three signal schedules.
• MODE 5: Set Duration-To enter the signal length for each individual circuit. Durations can be 1 to 99 second length.
• MODE 6: Enable Circuits-To enable or disable circuits. Circuits may be disabled during holidays or while the system is being serviced.
• MODE 7: Daylight Saving-To set clocks one hour forward or backward on the following Sunday at 2:00AM.
• MODE 8: Schedule Select-To change from one signal schedule to another. Any of the three schedules can be selected.