Manufacturer of smart security solutions, including wireless alarm systems, solar-powered infrared gratings, and intrusion detectors.
Ei (Quanzhou Heyi Electronics Co., Ltd.) is a prominent manufacturer specializing in smart home security and perimeter protection systems. Since its establishment, the company has focused on developing advanced wireless alarm technologies, offering a wide range of products such as the HY series alarm hosts, wireless keypads, and motion sensors. Their solutions are widely used for residential courtyards, businesses, and industrial properties to prevent unauthorized access.
The brand is particularly known for its solar-powered multi-beam active wireless infrared gratings, which provide perimeter defense without the need for complex wiring. HEYI products integrate seamlessly with various alarm panels, supporting features like RFID arming/disarming and remote monitoring. In addition to security electronics, the HEYI name is also associated with precision electrical components like split-core current transformers in some markets.
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To restore the programming password to factory defaults on the HY-305E keypad, press and hold the [*] and [#] keys simultaneously while powering on the device. Continue holding until you hear two short beeps, indicating the reset was successful.
If the receiver and transmitter align successfully during setup, the device may beep 6 times to indicate they are interconnecting. If the grating beeps continuously or operates abnormally, check for low battery or misalignment.
Follow your alarm host's instructions to enter 'remote controller enrolling status.' Then, on the HEYI keypad, enter the user password followed by the arm or disarm key to send a wireless signal to the host for pairing.
If the power indicator flashes once every 2 seconds and the keypad emits a long beep every minute, the battery is low. Connect the external power supply to charge the device for at least 8 hours.