SM4 Garmin GPS

£145.00 Ex. VAT
In stock

GPS Receiver/Antenna is for use with the SM4BAT-FS, SM4BAT-ZC, SM4 Acoustic, EM3+, and SMZC.


If you are an ecology professional and need to cover large areas and/or log the location of your path and recordings then this GPS by Garmin will be for you.

Compatible with the following bat detectors:


Key Features:

  • easily configure time of day recording schedules on the SMZC or SM4BAT
  • accurately set the clock to within one second of the GPS time base to synchronise your recorders
  • quickly set the latitude and longitude of SM4 units
  • high-sensitivity, 12-parallel-channel, WAAS-enabled GPS receiver


Technical Specifications:

Dimensions (mm; ⌀ x H): 61 x 19.5
Weight (g): c. 105
Colour: black
Case material: polycarbonate thermoplastic (IPX7)
Operating temperature: -30 °C to + 80 °C
Storage temperature: -40 °C to +80 °C

GPS receiver sensitivity: -185 dBW minimum
Receiver: WAAS Enabled
Reaquisition time: > 2 seconds
Aquisition time (cold): c. 45 seconds
Aquisition time (warm): c. 38 seconds
Aquisition time (hot): c. 1 second

Accuracy (standard positioning service) - position: <15 meters, 95% typical
Velocity: 0.1 knot RMS steady rate


In the field:

The GPS antenna plugs into the port on the right side of the EM3/EM3+ and attaches to the back of the device with the supplied fastening "dots". The antenna can be extended if necessary for better placement (during car transects for example) using a standard CAT-5 network extension (male to female) cable.

When the GPS is plugged in, a "?" will appear to the right of the time on the bottom line of the display. This indicates that a GPS antenna is connected and recognized but not yet synchronized. When the GPS has acquired satellites and is time synchronized, the "?" will be replaced with a "$". If the display shows a "!”, an error has occurred communicating with the antenna. Check the connection and try again. The latitude and longitude will be displayed to the right of the time in decimal degrees format.

If the GPS has been used recently in the area, the position fix will take under a minute. If a significant amount of time has elapsed or the GPS has been shipped some distance, the GPS must download new tables. In this case the first position fix can take up to 40 minutes, but subsequent fixes should still occur in under a minute.

We now offer FREE UK SHIPPING for online orders over £75 to the UK mainland (under 20kg), including service & repair items. For information on qualifying requirements for free shipping, please see our delivery page.

We aim for next working day delivery on all UK mainland orders received before 2.30pm. Where products need to be made to order or are not a regular stock item, or during busy times of year, despatch times may be longer.

If your order is urgent please call us on 01451 833 181. There is usually an additional charge for timed delivery.

We will always use a reputable courier company and require a signature on delivery. Smaller items are usually shipped using Royal Mail or DPD, and larger items are sent using TNT or Tuffnells. Palletised deliveries are with Pallex.

We will email you shipping confirmation after your order has been despatched. Where available, you will also receive tracking notification by email or text. If you need to track your parcel urgently then please contact us.

We can deliver to anywhere in the world, but you may need to contact us for a quote.

If your order doesn’t qualify for free shipping then UK mainland delivery starts at £7.92 ex VAT, while Highlands and Islands delivery starts at £12.50. You can calculate shipping costs using the basket.

For full delivery information please click here.

Important Information About Backorders

At Wildcare there are times when items are only available on a backorder basis, either due to high demand or if the item is a special order item. We refer to these as ‘backorder items.

Backorder items are clearly listed on our website as ‘Order To Reserve Stock (Backorder)’. Items that are in stock and ready to be shipped immediately are listed as ‘In Stock’.

When you place an order for a back order item or an order that includes back order items, a member of our team will be in contact within 48 hours of your order to confirm the lead time for delivery. For any queries before then, please call us on: 01451 833 181

Avoiding Disappointment

We cannot guarantee that a backordered item will come back into stock or be delivered for a specific date, however we will always do our best to keep you informed and updated.

If your back order is urgent or required within a specific time frame we suggest to call us on 01451 833 181 so we can keep your requirements in mind throughout the waiting period.


If you receive damaged items or the wrong goods, please let us know straight away so that we can arrange for them to be returned to us and replaced as quickly as possible.

You will need to obtain a Returns Number  - please call us on 01451 833 181 or email [email protected]

Please return goods, WITH THE RETURNS NUMBER MARKED ON THE PARCEL to: Wildcare, Eastgate House, Moreton Road, Longborough, GL56 0QJ

We may ask for a photograph any damaged items before we agree to replace them.

Please click here to view our full returns policy.