Product Overview
The Baomain CN101A is a versatile digital LCD programmable timer switch designed for precise control of electrical devices. It features a wide time range, multiple programming options, and a built-in battery for memory retention during power outages. This manual provides detailed instructions for installation, operation, and programming to ensure optimal performance.
Safety Instructions
WARNING:
- Always disconnect power before installation or maintenance.
- Ensure the input voltage matches the device's rated control voltage (DC/AC 24V).
- Do not exceed the contact capacity of 16A, AC 250V.
- This unit is designed for AC/DC 24V control. Do not use to switch DC power unless explicitly stated for the specific model variant.
- Installation should be performed by a qualified electrician if you are unsure.
- Keep the device away from moisture and extreme temperatures.
Refer to the safety instruction sheet included in the product packaging for additional warnings and precautions.

Image: The Baomain CN101A timer packaged in its retail box, highlighting the inclusion of a safety instruction sheet.
Product Features
- Product Name: Programmable Timer
- Model No.: CN101A
- Rated Control Voltage: DC/AC 24V
- Contact Capacity: 16A, AC 250V
- Full Time Range: 1 Minute to 168 Hours
- Programmable: Up to 17 times per week or day
- Internal Battery: 1.2V/40mA (rechargeable for memory retention)
- Power Failure Memory: Up to 60 days
- Operating Temperature: -10°C to +40°C
- Net Weight: 76g
Package Contents
The package includes:
- 1 x Baomain CN101A Digital LCD Power Programmable Timer Time Switch Relay
- 1 x User Manual (this document)
Product Views and Dimensions

Front view of the timer, showing the LCD display and control buttons.

Back view of the timer, displaying the input and output terminals with specifications.

Dimensional drawing of the timer, providing precise measurements for installation planning.
Installation and Wiring
The Baomain CN101A timer is designed for easy integration into your electrical system. Follow the diagram below for correct wiring. Ensure power is disconnected before proceeding.

Image: Connection diagram illustrating how to wire the timer to a power source and a device.
Wiring Terminals:
- Terminals 1 & 2: Power Input (24V DC/AC)
- Terminals 3, 4, 5: Output Relay (16A, AC 250V) - Single Pole, Single Throw
Important: Verify input voltage (24V DC/AC) is correct for your device before connecting.
Operating Instructions
This section details how to set the current time and program the timer for automatic operation.
1. To Start Switch:
Press the Reset Key (C). For the first time, if you want to set the present time, press the ⌚ (Clock) button, then press D+, H+, M+ to adjust the number to the present time.
2. Enter into Programming:
The timer allows for up to 17 ON/OFF programs. Follow the steps in the table below to set your desired schedule.

Image: Programming table for setting ON/OFF times.
| Step | Key | Programming |
|---|---|---|
| 1 | Press P | Setting 1 ON time (display 1 on) |
| 2 | Press H+/M+ | Setting hours and minutes |
| 3 | Press D+ | To select same every day, or different time each day |
| 4 | Press P | Setting 1 OFF time (display 1 off) |
| 5 | Press H+/M+ | Setting hours and minutes turn off time |
| 6 | Press D+ | If you want the same every day, you need not press this key |
| 7 | Repeat step 2-6 | Set 2-17 on/off time |
| 8 | Press ⌚ | End |
If you do not require all 17 settings, press ⌚ (Clock) to the end.
Special Button Functions

Image: Overview of special button functions and common error codes.
- 1. Clock button (⌚): Continue pressing the ⌚ button 4 times. The LCD screen will indicate/show "a", which means all buttons are locked. Re-press 4 times again to unlock.
- 2. C/R button: Press and hold for 5 seconds. The LCD display will flash, indicating that the factory settings have been restored.
- 3. Manual Button: Press and hold for 5 seconds. The LCD screen will turn off, meaning the timer is turned off. If you want to turn it on again, please follow the same procedure: press and hold for 5 seconds, then the LCD screen will turn on again. The setting data will not be lost when the LCD screen is turned ON & OFF.
Error Codes:
If there are setting mistakes or errors, the LCD will show the following codes:
- E1: Doesn't set the start time.
- E2: Doesn't set the end time.
Troubleshooting (Q&A)
Common questions and solutions for the Baomain CN101A timer.
Q: The Display screen of Time Switch can't turn on?
A: Please press the 'Manual' key lasting 5 Seconds. If you received a power-off switch, or please charge it for 10 Minutes.
Q: The Timer Switch does not energize when the Proper Voltage is applied.
A: Please check the wiring if correct according to the instruction Type A, and Correct Input Voltage.
Q: Is it work for DC input and DC output?
A: No, the CN101A series (as per general series information) is typically for DC/AC 12V Input and AC 220V Output. For this specific model (CN101A-24V), the rated control voltage is DC/AC 24V. If you require 12V input/output, please choose the CN101C Series.
Q: Can the built-in battery be rechargeable or replace?
A: It's a CR2032 lithium button battery which can't rechargeable, but you can open and replace it. The battery is for the program's power-off memory, not for powering the switch for control.
Technical Specifications
| Specification | Value |
|---|---|
| Model Number | CN101A-24V |
| Rated Control Voltage | DC/AC 24V |
| Contact Capacity | 16A, AC 250V |
| Full Time Range | 1 Minute - 168 Hours |
| Programmable Settings | 17 times/week or day |
| Internal Battery | 1.2V/40mA (rechargeable) |
| Power Failure Memory | 60 days |
| Operating Temperature | -10 to +40 C |
| Net Weight | 76g (2.47 ounces) |
| Material | Plastic |
| Color | Gray, White |
| Product Dimensions (L x W x H) | 2.4"D x 2.36"W x 1.3"H (60mm x 54mm x 30mm) |
| Manufacturer | Baomain Electric Co.,Ltd |
| UPC | 508731575168 |
Official Product Video
Watch this official video from Baomain for a visual guide on setting the time and programming the timer.
Video: A demonstration of setting the current time and programming ON/OFF cycles on the Baomain CN101A Digital LCD Power Programmable Timer Switch.
Warranty and Support
Specific warranty information for the Baomain CN101A Digital LCD Power Programmable Timer Time Switch Relay 16A is not available in the provided product data. Please refer to the product packaging or contact Baomain customer support directly for warranty details and technical assistance.
For further support, visit the official Baomain store on Amazon: Baomain Store





