TMR-01A

TMR-01A Copper TM Probe with Guide Ring

The TMR-01 with a polymer guide ring — the ring helps guide the key onto the contact.

Mechanically the same chrome-plated copper contact as the TMR-01, with one addition that changes the user experience: a white polymer guide ring around the rim. The ring is designed to funnel the key onto the contact instead of letting it skid across a flat face, which matters at an entrance door where people present the key one-handed, in the dark, without looking. It is also intended to cushion the impact of a metal can hitting a metal face. Panel-mount body with a threaded neck and nut, 200 mm of 24 AWG red/black sheathed lead, no terminal fitted — cut and crimp to whatever your controller expects.

Ordering information

MOQ	Confirmed by model and order when quoting
Preparation time	Availability and lead time are confirmed by model and order when quoting
Packing	Confirm pack quantity, protection and labelling for the selected model.
Samples	Sample quantity, fees and shipping are confirmed for the selected model.
Payment	Agree payment terms and the payee in the quotation and invoice.
Shipping	Confirm the shipping method, cost and timing for your destination and order.
Customization	State ROM, colour, marking and packing needs; feasibility and cost require confirmation.

Why this model

The guide ring is the whole point

A bare probe asks the user to aim; this one is designed to aim for them. The raised polymer ring catches the edge of the can and guides it toward the contact, which can make a first-touch read more likely — the difference between a resident who taps once and one who scrapes the key around the panel in the rain. It may help reduce "the reader is broken" call-outs that turn out not to be a reader fault at all; price against the plain TMR-01 is confirmed in the quote. Choose the plain TMR-01 where the panel already has a recess doing the same job, or the TMR-01-4P when you also need an LED.

Key features

Polymer guide ring funnels the key onto the contact — reliable first-touch reads, even one-handed in the dark.
Chrome-plated copper contacts for low contact resistance and clean 1-Wire signalling.
Ø24.0 mm face, 18.0 mm overall depth, 6.3 mm flange, Ø19.8 mm threaded neck with fixing nut.
Pre-wired 200 mm 24 AWG red/black sheathed lead (DATA red, GND black), no terminal fitted.
Metric design for straightforward panel mounting; ring colour and cable length can be requested. Colour, marking and other customization options: feasibility, MOQ and cost are confirmed in the quote.

Specifications

Chip / compatibility	For DS1990A / TM1990A / RW1990 projects; verify the supplied key and reader versions with the target controller
Package	Chrome-plated copper contact with white polymer guide ring; Ø24.0 × Ø16.3 mm face, 18.0 mm overall depth, 6.3 mm flange
Mounting	Panel mount, threaded neck Ø19.8 mm with nut; 200 mm 24 AWG red/black sheathed lead, no terminal
Protocol	1-Wire®
Operating temperature	−40 °C … +85 °C (1-Wire chip, per the original manufacturer's datasheet; confirm for the supplied version)
Options	Wire length, connector type and ring colour options are confirmed in the quote; TMR-01 is the same probe without the ring

Product dimensions

Typical applications

Intercom & Door-Phone Keys Access Control Smart Home, 1-Wire & KNX

Frequently asked questions

What does the guide ring actually improve?

It is designed to funnel the key onto the contact instead of letting it skid across a flat face, to help first-time landings when users present one-handed, in the dark, without looking. It is also designed to cushion a metal can striking the metal face thousands of times a year.

What are the mounting dimensions?

Ø24.0 mm face with Ø16.3 mm contact, 18.0 mm overall depth, 6.3 mm flange; panel mount through a Ø19.8 mm threaded neck with nut, 200 mm 24 AWG lead.

Can the ring colour be customised?

Ring colour, wire length, connector type and other customization options: feasibility, MOQ and cost are confirmed in the quote. The TMR-01 is the same probe without the ring if you prefer a bare face.