Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
Add description, images, menus and links to your mega menu
A column with no settings can be used as a spacer
Link to your collections, sales and even external links
Add up to five columns
September 08, 2026 5 min read
Complete operating guide for the Serene Innovations HD-50JV 40dB amplified telephone with talking keypad, speakerphone, and voice-activated answering.
Operating guide for the Serene Innovations HD-50JV Amplified Telephone — a 40 dB amplified corded phone with talking keypad, speakerphone, and voice-activated answering, designed for hard-of-hearing users.
Use only a UL-listed Class 2 power adapter, 9VDC, 300mA. Plug it into the nearest AC outlet.
The base accepts four AA batteries (user-provided) as backup power during an outage — installation is optional. Without batteries, the phone reverts to a simple, non-amplified telephone during a power outage. Always disconnect the phone cord from the wall jack before changing batteries. Dispose of used batteries through your local recycle center; never in fire or regular trash.
Lift the handset (or press the Speakerphone key) to answer or dial. Hang up (or press Speakerphone again) to end the call.
When enabled, the "Amplify/Voice Answer" indicator flashes periodically. Stay within 5 feet of the phone when it rings and say "H-E-L-L-O" (or make any sound louder than 1 second) during the silent interval between rings to auto-answer via speakerphone. Wait 0.5 seconds into the silent interval before speaking.
While on a handset call, press the Speakerphone key then hang up the handset — the call transfers to hands-free. Lifting the handset again turns the speakerphone off.
Adjust the volume slide while on a call. Press the AMPLIFY key to add an extra 25 dB of receiver amplification (indicated by the Amplify light); while active, the tone control also activates — experiment with tone settings for the clearest voice, then reuse that setting on future calls. (Tone control does not function in speakerphone mode.)
Located on the phone's underside. ON: the amplify function activates automatically every time you lift the handset — recommended for single users. OFF: you must manually press AMPLIFY each call — recommended when the phone is shared by multiple users.
For all settings below: while off-line, press and hold PROG for about 3 seconds to enter setting mode (voice confirms "Program, Program"), then press PROG again to save and exit.
A three-position ringer loudness switch (Hi/Med/Lo) is located on the side of the phone.
If your line is set to pulse dialing but an application (banking, voicemail) requires tones, press "*" after pulse dialing to temporarily switch the keypad to tone mode. It automatically reverts to pulse dialing on the next call.
| Amplified dB (Amplify off) | 0 to 15 dB |
| Amplified dB (Amplify on) | 25 to 40 dB |
| Tone control settings | 4 settings (T1–T4) |
| Talking keypad languages | English, Français, Español |
| Handset size / weight | 7.0" x 2.1" x 1.2" / 5.7 oz. |
| Base size / weight | 6.7" x 3.1" x 5.0" / 16 oz. |
| Operating temperature | 0 to 30°C |
| Storage temperature | -10 to 40°C |
| AC Adapter | UL listed 9 VDC, 300 mA |
| Base battery (optional) | 4x AA regular batteries (user-provided) |
| Issue | Answer |
|---|---|
| No dial tone | Verify both the phone cord and handset cord are properly plugged in, and the AC adapter is connected. |
| Why do I need batteries? | Batteries are optional backup power during outages. Without them, the phone works but loses amplification during a power outage. |
| Static noise on the line | The phone may be near a touch lamp, microwave, or other appliance. If using DSL, ensure a DSL filter is installed. |
| Phone answered the call by itself | Voice-Activated Answering is turned on. Follow the setting steps above to disable it. |
| Voice-Answer indicator flashing regularly | This just indicates the Voice-Activated Answering feature is currently enabled. |
Complies with Part 68 of the FCC rules and ACTA requirements; a label on the unit lists the product identifier and Ringer Equivalence Number (REN). The sum of RENs on one line should not exceed 5.0 — contact your telephone company if unsure how many devices your line supports. This equipment also complies with Part 15 of the FCC Rules (Class B digital device) and Industry Canada's ICES-003. Any modification not expressly approved by the manufacturer may void your authority to operate the device. Not for use on coin service lines; connection to party lines is subject to state tariffs.
One-year limited warranty from date of purchase to the original consumer, covering defects in materials and workmanship under intended home use. Return the unit (freight prepaid) with proof of purchase to Serene Innovations for repair or replacement (refurbished or equivalent unit). Free return shipping within 30 days of purchase; a $9.95 handling charge applies for returns made after 30 days but within the warranty period. Does not cover accidental damage, misuse, incorrect voltage/frequency, or unauthorized repairs/alterations. Obtain a Return Authorization Number (RAN) before shipping — unauthorized returns will be refused.
Contact: Serene Innovations, Inc., 14615 Carmenita Road, Norwalk, CA 90650 — Tel: 562-407-5400, Toll Free: 866-376-9271 (M–F 9:00–5:00) — www.sereneinnovations.com
Sign up to get the latest on sales, new releases and more …