The Snom M53 is the no-frills DECT handset in Snom’s M5x family. It is built for sites that already run an M250 single-cell base or an M500 dual-cell base and need more cordless extensions without paying for extra radios or programmable keys. You get a 2.4-inch color screen, two softkeys, speakerphone, and up to 12 hours of narrowband talk time on two standard AAA Ni-MH cells. That mix is aimed at our customers in small offices, retail floors, clinics, and branch sites who want reliable voice first. The Telecom Spot Take Buy the M53 when you need more handsets, not more features. Snom left off Bluetooth and a 3.5 mm jack on purpose. That keeps the radio simple and makes battery swaps cheap when you field many units. Pair it to an M250 (sold as the M253 bundle) or an M500 and you stay inside one DECT system as the site grows. IT directors and facilities managers get zero-touch provisioning and over-the-air updates from the base. Business owners get a 120-gram handset with an antibacterial housing that is easy to issue, charge, and replace. Key Features 2.4-inch true-color TFT (240 × 320). Backlit blue/white screen so staff can read caller info and menus without squinting at a tiny mono panel. Two context-sensitive softkeys plus a full ITU keypad. Fast access to talk, hang-up, directory, voicemail, redial, mute, and speakerphone without a crowded key layout. Standard AAA Ni-MH batteries (2 × 1.2 V, 850 mAh). Swap cells from stock instead of waiting on a proprietary pack. Spare pack PN 00004760 is listed by Snom. Talk and standby times that match a full shift. Up to 12 hours narrowband talk, up to 9 hours wideband talk, and up to 120 hours standby per the datasheet. Works on Snom M250 and M500 bases. Same handset can sit on a single-cell SOHO base or a dual-cell M500 as the site adds coverage and users. Zero-touch provisioning and OTA / SUOTA updates. The base pushes setup and firmware. Staff do not walk each handset through a manual flash. Antibacterial housing. Useful on shared phones in clinics, front desks, and service counters. Hearing aid compatible (HAC) with earpiece, mic, and loudspeaker. Built-in speakerphone with a red status LED. No Bluetooth headset path and no 3.5 mm jack. Internal directory key. Local phone book access from the handset menu, plus date/time sync from the base. Compact 120 g body. About 163 × 48 × 21 mm. Charging cradle is 75 × 80 × 33 mm and uses a 6 V / 450 mA adapter. Technical Specifications Item Specification (manufacturer data) Model / type Snom M53 DECT handset Part number 00004740 (black; EU & UK listing on datasheet) EAN 4262377561485 Color / housing Black; antibacterial housing Placement Indoor, desktop (handset + charging cradle) Compatible bases Snom M250 (PN 00004742), Snom M500 (PN 00004628) Display TFT LCD, true color, graphical, backlit (blue/white) Display size 2.4" (51 mm) diagonal Resolution 240 × 320 pixels Indicators 2 red LEDs (audio key status; function key status) Keys 24 hard keys total: 12-key ITU pad, 2 softkeys, 5-way nav, OK/Menu, Directory, Vol +/−, Voicemail, Off-hook/Talk, On-hook/Cancel/Power, Redial, Speakerphone, Mute Batteries 2 × AAA Ni-MH, 1.2 V, 850 mAh, rechargeable Talk time Up to 12 h narrowband; up to 9 h wideband Standby time Up to 120 h Charger power 100–240 V AC, 50–60 Hz, 150 mA in; 6 V DC / 450 mA, 2.7 W out Audio devices Microphone, earpiece, external speaker; HAC Wireless DECT only (no Bluetooth, no 3.5 mm jack) DECT band (Europe) 1,880–1,900 MHz (safety sheet: 1,881.792–1,897.344 MHz) RF power (Europe) < 24 dBm Coverage (with compatible base) Up to 50 m indoor / 300 m outdoor Updates Software upgrade over the air (SUOTA / OTA) Provisioning Zero-touch via compatible M250 / M500 base UI languages English, French, Canadian French, Spanish, Mexican Spanish, German, Italian, Dutch, Greek, Polish, Swedish, Estonian, Danish, Russian, Portuguese, Czech Operating temperature 0 °C to 35 °C Humidity ≤ 95% non-condensing Handset size (H × W × D) Approx. 163 × 48 × 21 mm Cradle size (H × W × D) Approx. 75 × 80 × 33 mm Handset weight Approx. 120 g Package contents M53 handset, charging cradle, battery, power adapter, documentation, safety instructions Snom accessories EU PSU PN 00004758; UK PSU PN 00004759; spare battery PN 00004760 Comparison at a Glance All three are official M5x handsets for the same M250 / M500 bases. Specs below are from Snom datasheets only. Snom M53 Snom M55 Snom M56 Role Economy office / SOHO handset Feature all-rounder Rugged workforce handset Display 2.4" 240 × 320 TFT 2.4" 240 × 320 TFT 2.4" 240 × 320 TFT Extra keys 2 softkeys 6 programmable LED keys 6 programmable LED keys + alarm key Battery 2 × AAA Ni-MH 850 mAh Li-ion Li-ion Talk / standby 12 h NB / 9 h WB / 120 h Up to 19 h NB / 12 h WB / 240 h 12 h HD talk (Snom listing) Bluetooth / 3.5 mm Neither Bluetooth Bluetooth Housing extras Antibacterial Antibacterial + belt clip Antibacterial + IP67 + alarm / man-down Shared Call Emulation Not listed on M53 sheet Yes Yes Best fit Many low-cost extensions Desk-like cordless with line keys Dirty, wet, or lone-worker sites FAQ Does the M53 work by itself? No. It is a handset only. It must register to a Snom M250 or Snom M500 base. The M250 ships with an M53 as the M253 bundle. How long does the battery last? Snom rates two 850 mAh AAA Ni-MH cells at up to 12 hours narrowband talk, up to 9 hours wideband talk, and up to 120 hours standby. Can I use Bluetooth headsets or a wired 3.5 mm headset? No. Snom designed the M53 as a pure DECT handset and left those interfaces off. Use the built-in earpiece or speakerphone. Pick an M55 or M56 if you need Bluetooth. How do I add more handsets later? Register additional M5x handsets (M53, M55, M56, or M58) on the same M250 or M500. The M250 supports the M5x series in a single-cell layout; the M500 adds dual-cell capacity. What is in the box? Snom lists the M53 handset, charging cradle, battery, power adapter, and documentation.
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