Pet Carrier Tracking Collar: GPS Location

Pet carrier production desk · Updated 2026-10-06 · 17 min read

Pet carrier OEM builds to your drawing, while pet carrier ODM adapts an existing pet carrier accessory platform and removes the tooling cost. Both start from the same tech pack.

Module Housing: Envelope, Interface and Serviceability

The housing is the interface between the two halves of the product and it is where most integration failures originate. It has to hold a module, protect it, and still let the collar be a collar.

Envelope is set by the module, not by the design. A typical GPS plus cellular tracking module occupies 40-90 by 30-55 by 15-28 millimetres including its cell, and the housing has to add 1.5-3.0 millimetres of wall plus a seal, which puts the external package at 48-100 by 38-64 by 22-38 millimetres.

Weight is the constraint that governs acceptance by the wearer. A module of 22-55 grams plus a housing of 8-22 grams puts 30-77 grams on the collar, and on an animal below 5 kilograms that is above the 1-1.5% of body mass where the collar starts to be felt.

Serviceability is the requirement that is forgotten until the first battery change. A housing that requires the collar to be removed and a tool to be found takes 3-8 minutes; one with a quarter-turn or a two-screw closure accessible with the collar on takes 30-90 seconds.

Seal material determines whether the rating holds after a year. A silicone O-ring at 40-70 Shore A holds its compression set for 2-5 years; a cheaper thermoplastic elastomer seal takes a compression set in 6-18 months and the rating is lost without any visible damage.

Mounting to the strap is a load question. A housing riveted or stitched to a 20-25 millimetre webbing at two points carries 150-450 newtons; a single-point mount rotates under load and eventually tears the webbing at the stitch line.

Internal retention of the module matters as much as the external seal. A module loose inside its housing by 1-3 millimetres impacts the housing wall on every jump and fails a connector in 2-8 months; a 0.5-1.5 millimetre foam pad or a locating rib removes it.

Two-point mount the housing to the strap, use a silicone seal at 40-70 Shore A, and pad the module internally to under 1.5 millimetres of movement.

Antenna Environment: Clearance, Orientation and Detuning

Positioning performance is decided by the antenna environment, and the antenna environment is decided by the collar design. This is the part of the product where a good module is made to perform badly by its surroundings.

Clearance is the first requirement. A GPS patch antenna needs a clear view of the sky through the housing, and a metal D-ring, a buckle, a name plate or a reflective foil within 20-50 millimetres detunes it and costs 20-60% of position accuracy.

Orientation is the second. A patch antenna works best facing upward, which on a collar means mounted on the dorsal aspect of the neck rather than at the throat; a unit under the jaw loses 25-55% of the sky view and its fix rate drops accordingly.

Housing material over the antenna is the third. A radio-transparent window of polycarbonate or ABS at 1.5-3.0 millimetres costs 0.5-2.5 decibels of signal; the same window metallised for appearance costs 8-25 decibels and effectively disables the receiver.

Every one of these costs nothing to get right at the design stage and between 120-450 USD of tooling to fix afterwards, which is the argument for an antenna review before the housing is tooled rather than after the first samples fail.

Verification should be a field fix-rate test rather than a bench test. A unit measured in an open field for 30-120 minutes under a clear sky gives a fix-rate percentage and a position error in metres, which is the number a customer actually experiences.

Cellular and Wi-Fi positioning, where the module uses them as a fallback, have their own environment requirements. A cellular antenna detunes near a large metal surface in the same way, and the same 20-50 millimetre clearance rule applies to it.

Hold 20-50 millimetres of clearance, mount dorsally under a non-metallised window of 1.5-3.0 millimetres, and verify with a 30-120 minute field fix-rate test before tooling.

Ingress Protection: What IP67 and IP68 Actually Commit To

An ingress rating is the most quoted and least understood specification on an electronic pet product. The code is defined by a published standard, it describes two separate properties, and it says nothing at all about several things buyers assume it covers.

The code is defined in IEC 60529 and it has two digits. The first covers solid particle ingress on a 0-6 scale and the second covers water ingress on a 0-9 scale, with 6 meaning dust-tight and 7 meaning immersion to 1 metre for 30 minutes.

IP68 is not a single defined test. The second digit 8 means immersion under conditions agreed between manufacturer and user, which are always more severe than IP67 and must be stated in the specification — a depth and a duration, typically 1.5-3.0 metres for 60-240 minutes.

What the code does not cover is equally important: it does not cover water jets at an angle unless the second digit is 5 or 6, it does not cover salt water, it does not cover pressure washing, and it does not cover ageing of the seal.

Seal ageing is the gap between the rating and the field experience. A rating is measured on a new unit; a silicone seal holds its compression for 2-5 years and a thermoplastic elastomer for 6-18 months, so the rating in year two depends entirely on the seal material.

Salt water is a separate failure mechanism that no IP rating addresses. Chloride ingress at a connector or at a seal interface corrodes in 2-12 weeks of marine exposure, and the controls are a conformal coating on the board and a rinse instruction for the user.

Test evidence should be requested with the depth and duration stated, not as a code alone. A report that reads "IP68" without a depth and a duration is not a specification; one that reads "IP68, 2 metres for 120 minutes" is.

Specify the rating with its depth and duration, require the seal material to be named, and add a conformal coating plus a fresh-water rinse instruction for marine use.

Strap and Webbing Specification Around the Electronics

The strap is not an afterthought to be chosen after the module; it carries the electronics, it determines the antenna environment, and it is what the customer touches every day. It also has its own load and durability specification.

Width is set by the housing and by the animal. A housing of 38-64 millimetres needs a strap of 20-32 millimetres to mount without overhang, and on a small animal a strap above 25 millimetres is disproportionate to the neck.

Webbing rating is a load specification. A polyester webbing at 20-25 millimetres with a breaking strength of 1,800-4,500 newtons is standard; the working load after a buckle and a stitch is 400-1,200 newtons, which is well above anything a collar sees in normal use.

Metal content near the antenna is the design constraint that comes from the electronics. A strap with a metal D-ring, a name plate and a metal buckle within 20-50 millimetres of the housing needs the housing relocated rather than the hardware removed.

Reflective integration is a visibility feature and a marketing one. A 25 millimetre band at 300-700 candela per lux per square metre on a collar is visible at 60-160 metres at night, and it costs 0.25-0.95 USD against a decorative trim that is visible at 20-50.

Adjustment range determines how many sizes the programme needs. A collar with 80-160 millimetres of adjustment covers three to four conventional size steps, which concentrates the MOQ and reduces the number of strap lengths to be cut.

Abrasion at the housing interface is a specific wear site. The housing edge rubs the webbing at every movement and cuts 20-60% of the webbing life at that point; a bound edge or a 200-300 gram backing patch under the housing is the fix at 0.08-0.30 USD.

Match strap width to the housing and the animal, relocate the housing rather than the hardware when clearance conflicts, and reinforce the webbing under the housing edge.

Battery: Capacity, Access, Cold Performance and Transport

The cell is the component with the most rules attached to it and the one most likely to delay a programme. Capacity, chemistry, access and transport each have a constraint that should be settled before the housing is designed.

Capacity and service interval are the commercial variables. A 300-900 milliamp-hour cell with a module drawing 15-80 milliamps in tracking mode gives 4-48 hours of continuous use and 3-14 days on a duty-cycled report interval, which is the number on the packaging.

Cold performance is the specification that is rarely published and often matters. A lithium polymer cell delivers 60-85% of its rated capacity at 0 degrees Celsius and 30-60% at minus 20, so a collar rated for winter use needs a 30-70% capacity margin.

Access and replacement is a design decision with a regulatory dimension. A sealed non-replaceable cell removes the user-service question and simplifies the ingress rating; a replaceable cell requires a tooled closure, a defined cell part number and a spare-parts plan.

Air transport is the constraint that surprises people. A lithium cell shipped installed in equipment follows one route and a cell shipped separately follows another, and both are governed by the dangerous-goods rules published by IATA, which set the state-of-charge limit, the packaging and the documentation.

State of charge at shipment is a specific rule rather than a preference. Cells are generally shipped at 30% or less of charge when travelling alone and the limit applies per cell rather than per consignment, so a production plan that charges units before packing creates a shipping problem.

Cell sourcing has the longest lead time in the chain. A specified cell from a named manufacturer takes 45-110 days against 20-45 for a generic, and it is the item that should be committed first in the programme rather than last.

Specify the cell by manufacturer and part number, size it with a 30-70% cold-weather margin, and commit it before anything else in the programme.

Environmental and Mechanical Testing

An electronic product on an animal sees a combination of conditions that no single consumer-electronics test covers: impact, vibration, temperature cycling, water and continuous flexing of the strap. The regime has to be built for that combination.

Drop testing is the obvious one and the height should match the use case. A collar worn by an animal falls from the animal's own height plus a jump, so a drop of 1.0-1.8 metres onto a hard surface over 6-12 orientations is the realistic specification rather than the 0.5-1.0 metre of a handheld device.

Vibration and shock cover transport and activity. A random vibration profile of 1-4 hours plus a shock test of 10-30 pulses at 50-300 g covers both the freight journey and a full-speed collision with a stationary object.

Temperature cycling is the test that finds seal and solder failures. Cycles between minus 20 and plus 60 degrees Celsius over 10-50 cycles reveal a seal that leaks at the low end and a cell that sags at the high end.

Strap flex at the housing edge is the test unique to this product and it is the one most programmes skip. The housing edge acts as a cutting edge against the webbing under repeated flexing and cuts through in 5,000-20,000 cycles without a reinforcement patch.

Functional verification after each test matters more than cosmetic inspection. A unit that looks intact and no longer acquires a fix has failed, and the check is a fix-rate measurement rather than an appearance check.

Sample size should be stated in the plan. Three to eight units per test is typical for a development qualification and one to three per batch for a production verification, and the distinction should be written down so nobody argues about it later.

Drop from 1.0-1.8 metres, cycle the temperature range, and include a strap flex test at the housing edge with functional verification after every test.

Electronic and Chemical Compliance

An electronic product carries a compliance set that a textile product does not, and the two sets have to be satisfied simultaneously on the same unit. Missing either one stops the shipment rather than the sale.

Radio is the first. A module with a cellular or a short-range transmitter has to be authorised in each market it is sold in, and the practical route is to use a module that already carries a modular approval and to verify that the approval covers the antenna configuration actually used.

Electromagnetic compatibility and safety are the second. The applicable framework in the United States is administered by the Consumer Product Safety Commission for product safety, with radio authorisation handled separately, and in the European Union the CE marking covers both under a single declaration.

Chemical compliance applies to the whole article, electronics included. Restrictions on substances in electrical equipment, and REACH obligations on the textile and metal components, both apply, and the declaration has to cover the assembled product rather than the parts.

The module decision is the biggest lever in this table. A pre-approved module removes radio authorisation from the critical path entirely; a custom radio design puts 45-135 days and 2,000-12,000 USD onto it, and it is rarely worth it for this product.

The cell transport document is the item that holds a shipment at the airport. A UN 38.3 test summary from the cell manufacturer, plus packaging that follows the applicable dangerous-goods packing instruction, is what a carrier checks before accepting the consignment.

Textile and electronic declarations have to be combined at article level. A buyer receiving two separate certificates — one for the webbing and one for the module — cannot answer a retailer's question about the finished product, and the assembled-article declaration is the one that closes the review.

Use a pre-approved module, obtain the cell transport summary before the first shipment, and issue one declaration for the assembled article rather than two for the parts.

Programme Structure: Two Supply Chains, One Delivery Date

The scheduling problem on this product is that the electronic half and the textile half have different lead times and they cannot be joined until both arrive. The plan has to be built backwards from the delivery date with the longer chain driving it.

A cell and a module at 45-110 days is the critical path; webbing, hardware and sewing at 20-45 days is not. Assembly, test and packing take 5-15 days after both halves are present, and inspection to AQL 2.5 with a functional check takes 3-8.

Working backwards from a delivery date, the cell commitment sits 110-165 days out, the module 90-140, the textile components 55-95, and the artwork and specification lock ahead of all of them. Programmes that commit the textile first and the electronics second arrive late by the difference.

Prototyping follows the same asymmetry. A textile prototype is 6-10 working days; an electronic prototype with a firmware build is 25-70 days, and the first integrated sample can only exist after the longer of the two.

After-sales policy has to be written for an electronic product rather than for a strap. A dead-on-arrival rate of 0.4-2.5% is normal for a consumer electronic assembly and the policy should state the replacement window, the return route and who carries the freight, before the first shipment.

Cell transport restrictions affect the returns route as much as the outbound one. A unit returned with a cell inside is a dangerous-goods shipment, and a policy that requires the cell to be removed before return, or that routes returns through a domestic facility, avoids the problem.

Programme terms are standard: MOQ 500 pieces per colourway, textile prototypes in 6-10 working days and integrated electronic samples in 25-70 days, bulk production 35-50 days after sample approval, final random inspection to AQL 2.5 including a functional check, T/T 30/70 and FOB Xiamen. Production runs through the SGS-verified production base under ISO 9001 and BSCI coverage, with 4,950 square metres, 137 staff and seven lines. Commit the cell first, use a pre-approved module, and write the returns policy for a lithium product rather than for a strap.