This document describes the Wireless Handset User Manual for the KDH231A device, an 11-key wireless handset designed for controlling an adjustable bed.
Function Description
The handset provides wireless control over various functions of an adjustable bed, including bed position adjustments, memory settings for preferred positions, and vibration modes. Each key on the handset is assigned a specific function, allowing users to customize their bed's settings.
Key Functions:
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Key 1 (Flashlight Control):
- Press: Turns the flashlight on.
- Release: Turns the flashlight off.
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Key 2 (Memory Position - Viewing):
- Long Press (3 seconds): Memorizes the current bed position as the "viewing" position. The backlight flashes 3 times, and the control box buzzes once to confirm. This overwrites any previously stored "viewing" position.
- Short Press (after memorizing): Moves the bed to the memorized "viewing" position.
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Key 3 (Memory Position - BOOK):
- Long Press (3 seconds): Memorizes the current bed position as the "BOOK" position. The backlight flashes 3 times, and the control box buzzes once to confirm. This overwrites any previously stored "BOOK" position.
- Short Press (after memorizing): Moves the bed to the memorized "BOOK" position.
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Key 4 (Bed Back Rise):
- Press: Raises the back of the bed.
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Key 5 (Bed Leg Rise):
- Press: Raises the leg section of the bed.
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Key 6 (Bed Back Down):
- Press: Lowers the back of the bed.
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Key 7 (Push Rod Retract - Simultaneous):
- Short Press: Retracts push rod 1 and push rod 2 simultaneously.
- Any Key Press (during operation): Stops the push rod retraction.
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Key 8 (Push Rod 2 Retract):
- Long Press: Retracts push rod 2.
- Release: Stops the push rod 2 retraction.
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Key 9 (Zero Gravity Mode / Memory Position):
- Short Press: Moves the push rod to a fixed "zero gravity" position.
- Long Press (3 seconds): Memorizes the current position as a custom memory position (overwriting previous memory). The backlight flashes 3 times quickly, and the control box beeps once.
- Short Press (after memorizing): Moves the fader (bed position) to the current memorized position.
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Key 10 (Vibration Mode Selection):
- Short Press: Cycles through 4 different vibration modes. When the vibration motor starts, it begins with the default intermittent vibration at a slower frequency (first level). Subsequent presses gradually increase the cycle.
- First Gear: Slower frequency intermittent vibration.
- Second Gear: Faster frequency intermittent vibration.
- Third Gear: Fastest frequency intermittent vibration.
- Fourth Gear: Continuous vibration.
- Automatic Shut-off: If no operation to change the button occurs within 30 minutes, the vibration motor automatically turns off.
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Key 11 (Memory Position - Current Push Rod):
- Long Press (about 3 seconds): The backlight flashes for 3 seconds and then stays on. The control box memorizes the current push rod position. Simultaneously, the buzzer buzzes once, and the backlight turns off.
- Short Press (after memorizing): Moves the lever (push rod) to the memorized position.
Important Technical Specifications
- Model: KDH231A
- Voltage: 4.5VDC (powered by 3 AAA 1.5V batteries)
- Current: MAX 50mA
- Number of Keys: 11
- Protection Class: IP 42 (Protected against solid objects greater than 1 millimeter, and against vertically falling drops of water when the enclosure is tilted up to 15 degrees)
- Main Material: HIPS-2330
- RF Frequency: 2420Mhz
Usage Features
The handset is designed for ease of use with clearly labeled keys and intuitive functions. The wireless operation provides flexibility in controlling the bed from various positions. Memory functions allow users to quickly return to their preferred viewing, reading, or zero-gravity positions. The integrated flashlight adds convenience in low-light conditions. The vibration modes offer customizable comfort options.
Maintenance Features
While the manual does not explicitly detail maintenance procedures, the device's power source (3 AAA 1.5V batteries) indicates that battery replacement will be the primary user-level maintenance. The "Protection class IP 42" suggests a degree of protection against dust and water splashes, implying a reasonable level of durability for indoor use.
FCC Compliance Information:
The device complies with Part 15 of the FCC Rules, meaning its operation is subject to two conditions:
- It may not cause harmful interference.
- It must accept any interference received, including interference that may cause undesired operation.
FCC Warning:
Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
Note on Interference:
This equipment has been tested and found to comply with the limits for a Class B digital device. It generates and can radiate radio frequency energy. If not installed and used according to instructions, it may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If interference occurs (e.g., to radio or television reception), users are encouraged to try to correct it by:
- Reorienting or relocating the receiving antenna.
- Increasing the separation between the equipment and receiver.
- Connecting the equipment to an outlet on a different circuit from the receiver.
- Consulting the dealer or an experienced radio/TV technician.
RF Exposure:
The device has been evaluated to meet general RF exposure requirements and can be used in portable exposure conditions without restriction.
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