SMX-U1 Microphone for SM2BAT bat detector

£230.91 Ex. VAT
In stock

The SMX-U1 omnidirectional ultrasonic microphone, designed for use with the SM2BAT+, provides you with excellent performance. It uses the same proprietary technology developed for the Song Meter SM3BAT and SMZC microphones, the SMM-U1. 

You can either connect the microphone directly to the SM2BAT+ unit or use it in combination with extension cables, allowing you to position the mic up to 100 m away from the recorder.

Key Features:

  • Rated at 8kHz to 192 kHz, it provides a flatter frequency response
  • Provides higher sensitivity at frequencies above 60kHz, capturing all necessary details in a bat call
  • Low self-noise
  • Built-in gain: requires a lower gain on the SM2BAT and SM2BAT+ than the older SMX-US or SMX-UT mics
  • Can be purchased with 1, 3, 10, and 50 m cables

If you have an SM2BAT we recommend that you service it every year to keep it in top operational condition. We also can repair these units.

Type: Knowles FG element

In the field: set 12dB of gain on the SM2BAT or SM2BAT+ for normal recording conditions or 0dB if you are close to the bats to avoid clipping. Alter rows 6 to 9 of the jumper switches. Set to 6 (on), 7 (off), 8 (off), 9 (on) for 12dB gain or set to 6 (on), 7 (off), 8 (on) 9 (off) for 0dB gain. 

For guidance on microphones please click here.

Comes with: protective foam windshield.

Warranty: 18-month manufacturer's warranty. Terms and conditions apply.


Q. Can I Use An SMM-U1 Or SMX-U1 Microphone To Record Non-Ultrasonic Signals?
A. SMM-U1 and SMX-U1 have built-in high-pass filters at 8 kHz to cut down on wind noise and other sources of low-frequency rumble. This means that any sound at frequencies lower than 8 kHz will be significantly reduced in volume or completely absent.


We now offer FREE UK SHIPPING for online orders over £30 to the UK mainland (under 30kg), 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 3.00pm. 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 £6.67 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

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.